18228776862 has 32 divisors (see below), whose sum is σ = 36730616832. Its totient is φ = 6030912384.

The previous prime is 18228776861. The next prime is 18228776873. The reversal of 18228776862 is 26867782281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18228776861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 430693 + ... + 471119.

It is an arithmetic number, because the mean of its divisors is an integer number (1147831776).

Almost surely, 2^18228776862 is an apocalyptic number.

18228776862 is an abundant number, since it is smaller than the sum of its proper divisors (18501839970).

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

18228776862 is a wasteful number, since it uses less digits than its factorization.

18228776862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40992.

The product of its digits is 7225344, while the sum is 57.

The spelling of 18228776862 in words is "eighteen billion, two hundred twenty-eight million, seven hundred seventy-six thousand, eight hundred sixty-two".