815287164 has 48 divisors (see below), whose sum is σ = 1987948032. Its totient is φ = 259566912.

The previous prime is 815287159. The next prime is 815287177. The reversal of 815287164 is 461782518.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 233697 + ... + 237159.

It is an arithmetic number, because the mean of its divisors is an integer number (41415584).

Almost surely, 2^815287164 is an apocalyptic number.

It is an amenable number.

815287164 is an abundant number, since it is smaller than the sum of its proper divisors (1172660868).

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

815287164 is a wasteful number, since it uses less digits than its factorization.

815287164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4346 (or 4344 counting only the distinct ones).

The product of its digits is 107520, while the sum is 42.

The square root of 815287164 is about 28553.2338623841. The cubic root of 815287164 is about 934.1935582172.

The spelling of 815287164 in words is "eight hundred fifteen million, two hundred eighty-seven thousand, one hundred sixty-four".