8165854372 has 48 divisors (see below), whose sum is σ = 15826974912. Its totient is φ = 3663054720.

The previous prime is 8165854369. The next prime is 8165854391. The reversal of 8165854372 is 2734585618.

It is a happy number.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 281047 + ... + 308737.

It is an arithmetic number, because the mean of its divisors is an integer number (329728644).

Almost surely, 2^8165854372 is an apocalyptic number.

It is an amenable number.

8165854372 is a deficient number, since it is larger than the sum of its proper divisors (7661120540).

8165854372 is a wasteful number, since it uses less digits than its factorization.

8165854372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27868 (or 27866 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 49.

The square root of 8165854372 is about 90365.1170087219. The cubic root of 8165854372 is about 2013.7267700211.

The spelling of 8165854372 in words is "eight billion, one hundred sixty-five million, eight hundred fifty-four thousand, three hundred seventy-two".