818182872 has 48 divisors (see below), whose sum is σ = 2386369440. Its totient is φ = 251748288.

The previous prime is 818182867. The next prime is 818182873. The reversal of 818182872 is 278281818.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818182873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 436128 + ... + 437999.

It is an arithmetic number, because the mean of its divisors is an integer number (49716030).

Almost surely, 2^818182872 is an apocalyptic number.

It is an amenable number.

818182872 is an abundant number, since it is smaller than the sum of its proper divisors (1568186568).

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

818182872 is a wasteful number, since it uses less digits than its factorization.

818182872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874152 (or 874145 counting only the distinct ones).

The product of its digits is 114688, while the sum is 45.

The square root of 818182872 is about 28603.8960982591. The cubic root of 818182872 is about 935.2982632000.

The spelling of 818182872 in words is "eight hundred eighteen million, one hundred eighty-two thousand, eight hundred seventy-two".