8165260631 has 4 divisors (see below), whose sum is σ = 8907557064. Its totient is φ = 7422964200.

The previous prime is 8165260511. The next prime is 8165260639. The reversal of 8165260631 is 1360625618.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8165260631 is a prime.

It is a super-2 number, since 2×8165260631² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8165260639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 371148200 + ... + 371148221.

It is an arithmetic number, because the mean of its divisors is an integer number (2226889266).

Almost surely, 2^8165260631 is an apocalyptic number.

8165260631 is a deficient number, since it is larger than the sum of its proper divisors (742296433).

8165260631 is a wasteful number, since it uses less digits than its factorization.

8165260631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742296432.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 8165260631 is about 90361.8317156088. The cubic root of 8165260631 is about 2013.6779626715.

The spelling of 8165260631 in words is "eight billion, one hundred sixty-five million, two hundred sixty thousand, six hundred thirty-one".