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1995146111 = 71369720809
BaseRepresentation
bin111011011101011…
…1000001101111111
312011001012220221102
41312322320031333
513041224133421
6525550523315
7100304314340
oct16672701577
95131186842
101995146111
11934231892
1247820653b
1325a467c3a
1414cd940c7
15ba25460b
hex76eb837f

1995146111 has 8 divisors (see below), whose sum is σ = 2280443040. Its totient is φ = 1709918208.

The previous prime is 1995146057. The next prime is 1995146177. The reversal of 1995146111 is 1116415991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1995146111 - 26 = 1995146047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1995146011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85475 + ... + 106283.

It is an arithmetic number, because the mean of its divisors is an integer number (285055380).

Almost surely, 21995146111 is an apocalyptic number.

1995146111 is a deficient number, since it is larger than the sum of its proper divisors (285296929).

1995146111 is a wasteful number, since it uses less digits than its factorization.

1995146111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34513.

The product of its digits is 9720, while the sum is 38.

The square root of 1995146111 is about 44667.0584547494. The cubic root of 1995146111 is about 1258.9009714038.

The spelling of 1995146111 in words is "one billion, nine hundred ninety-five million, one hundred forty-six thousand, one hundred eleven".

Divisors: 1 7 13697 20809 95879 145663 285020873 1995146111