818801312 has 48 divisors (see below), whose sum is σ = 1905845760. Its totient is φ = 338811648.

The previous prime is 818801309. The next prime is 818801329. The reversal of 818801312 is 213108818.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56528 + ... + 69519.

It is an arithmetic number, because the mean of its divisors is an integer number (39705120).

Almost surely, 2^818801312 is an apocalyptic number.

It is an amenable number.

818801312 is an abundant number, since it is smaller than the sum of its proper divisors (1087044448).

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

818801312 is a wasteful number, since it uses less digits than its factorization.

818801312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126093 (or 126085 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 32.

The square root of 818801312 is about 28614.7044716523. The cubic root of 818801312 is about 935.5338585258.

The spelling of 818801312 in words is "eight hundred eighteen million, eight hundred one thousand, three hundred twelve".