818101836 has 48 divisors (see below), whose sum is σ = 2122982400. Its totient is φ = 272446416.

The previous prime is 818101793. The next prime is 818101859. The reversal of 818101836 is 638101818.

It is a super-2 number, since 2×818101836² = 1338581228133141792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 818101836.

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, 139581 + ... + 145323.

It is an arithmetic number, because the mean of its divisors is an integer number (44228800).

Almost surely, 2^818101836 is an apocalyptic number.

It is an amenable number.

818101836 is an abundant number, since it is smaller than the sum of its proper divisors (1304880564).

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

818101836 is a wasteful number, since it uses less digits than its factorization.

818101836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7075 (or 7067 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 818101836 is about 28602.4795428648. The cubic root of 818101836 is about 935.2673836599.

The spelling of 818101836 in words is "eight hundred eighteen million, one hundred one thousand, eight hundred thirty-six".