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1461664141 = 71787116849
BaseRepresentation
bin101011100011111…
…0011100110001101
310202212101020020221
41113013303212031
510443141223031
6401012311341
751135640330
oct12707634615
93685336227
101461664141
116900869a3
12349612551
131a3a8c032
14dc1a4617
15884c5a11
hex571f398d

1461664141 has 8 divisors (see below), whose sum is σ = 1671422400. Its totient is φ = 1252143168.

The previous prime is 1461664133. The next prime is 1461664163. The reversal of 1461664141 is 1414661641.

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 1461664141 - 23 = 1461664133 is a prime.

It is a super-2 number, since 2×14616641412 = 4272924122170535762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1461664097 and 1461664106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1461664111) 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, 45916 + ... + 70933.

It is an arithmetic number, because the mean of its divisors is an integer number (208927800).

Almost surely, 21461664141 is an apocalyptic number.

It is an amenable number.

1461664141 is a deficient number, since it is larger than the sum of its proper divisors (209758259).

1461664141 is a wasteful number, since it uses less digits than its factorization.

1461664141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118643.

The product of its digits is 13824, while the sum is 34.

The square root of 1461664141 is about 38231.7164275945. The cubic root of 1461664141 is about 1134.8780532298.

The spelling of 1461664141 in words is "one billion, four hundred sixty-one million, six hundred sixty-four thousand, one hundred forty-one".

Divisors: 1 7 1787 12509 116849 817943 208809163 1461664141