815850168 has 64 divisors (see below), whose sum is σ = 2335253760. Its totient is φ = 232674816.

The previous prime is 815850151. The next prime is 815850209. The reversal of 815850168 is 861058518.

It is a happy number.

It is a super-2 number, since 2×815850168² = 1331222993251256448, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 94480 + ... + 102752.

It is an arithmetic number, because the mean of its divisors is an integer number (36488340).

Almost surely, 2^815850168 is an apocalyptic number.

It is an amenable number.

815850168 is an abundant number, since it is smaller than the sum of its proper divisors (1519403592).

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

815850168 is a wasteful number, since it uses less digits than its factorization.

815850168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8876 (or 8872 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 42.

The square root of 815850168 is about 28563.0910092028. The cubic root of 815850168 is about 934.4085473695.

The spelling of 815850168 in words is "eight hundred fifteen million, eight hundred fifty thousand, one hundred sixty-eight".