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1920634029 = 321391535279
BaseRepresentation
bin111001001111010…
…1000110010101101
311221212000022120200
41302132220302231
512413140242104
6514325504113
765411056056
oct16236506255
94855008520
101920634029
118a6169856
12457272039
13247ba9752
1414311972d
15b3936b39
hex727a8cad

1920634029 has 12 divisors (see below), whose sum is σ = 2794209600. Its totient is φ = 1271210184.

The previous prime is 1920633997. The next prime is 1920634039. The reversal of 1920634029 is 9204360291.

1920634029 is a `hidden beast` number, since 19 + 2 + 0 + 634 + 0 + 2 + 9 = 666.

It is not a de Polignac number, because 1920634029 - 25 = 1920633997 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1920633984 and 1920634002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920634039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 766389 + ... + 768890.

It is an arithmetic number, because the mean of its divisors is an integer number (232850800).

Almost surely, 21920634029 is an apocalyptic number.

It is an amenable number.

1920634029 is a deficient number, since it is larger than the sum of its proper divisors (873575571).

1920634029 is a wasteful number, since it uses less digits than its factorization.

1920634029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535424 (or 1535421 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 1920634029 is about 43825.0388362635. The cubic root of 1920634029 is about 1243.0297981248.

It can be divided in two parts, 19206 and 34029, that added together give a palindrome (53235).

The spelling of 1920634029 in words is "one billion, nine hundred twenty million, six hundred thirty-four thousand, twenty-nine".

Divisors: 1 3 9 139 417 1251 1535279 4605837 13817511 213403781 640211343 1920634029