812165160 has 32 divisors (see below), whose sum is σ = 2436495840. Its totient is φ = 216577344.

The previous prime is 812165153. The next prime is 812165161. The reversal of 812165160 is 61561218.

It is a super-2 number, since 2×812165160² = 1319224494235651200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (812165161) 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, 3383902 + ... + 3384141.

It is an arithmetic number, because the mean of its divisors is an integer number (76140495).

Almost surely, 2^812165160 is an apocalyptic number.

It is an amenable number.

812165160 is an abundant number, since it is smaller than the sum of its proper divisors (1624330680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

812165160 is a wasteful number, since it uses less digits than its factorization.

812165160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6768057 (or 6768053 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 812165160 is about 28498.5115400787. The cubic root of 812165160 is about 932.9995875879. Note that the first 3 decimals are identical.

The spelling of 812165160 in words is "eight hundred twelve million, one hundred sixty-five thousand, one hundred sixty".