8161937615 has 16 divisors (see below), whose sum is σ = 10549689696. Its totient is φ = 6026160000.

The previous prime is 8161937611. The next prime is 8161937647. The reversal of 8161937615 is 5167391618.

It is not a de Polignac number, because 8161937615 - 2² = 8161937611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8161937615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8161937611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 545180 + ... + 559950.

It is an arithmetic number, because the mean of its divisors is an integer number (659355606).

Almost surely, 2^8161937615 is an apocalyptic number.

8161937615 is a deficient number, since it is larger than the sum of its proper divisors (2387752081).

8161937615 is a wasteful number, since it uses less digits than its factorization.

8161937615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23290.

The product of its digits is 272160, while the sum is 47.

The square root of 8161937615 is about 90343.4425677924. The cubic root of 8161937615 is about 2013.4047567756.

The spelling of 8161937615 in words is "eight billion, one hundred sixty-one million, nine hundred thirty-seven thousand, six hundred fifteen".