18923402862 has 144 divisors (see below), whose sum is σ = 50847413760. Its totient is φ = 4980201408.

The previous prime is 18923402843. The next prime is 18923402873. The reversal of 18923402862 is 26820432981.

18923402862 is a `hidden beast` number, since 189 + 2 + 3 + 402 + 8 + 62 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 19568703 + ... + 19569669.

It is an arithmetic number, because the mean of its divisors is an integer number (353107040).

Almost surely, 2^18923402862 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18923402862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25423706880).

18923402862 is an abundant number, since it is smaller than the sum of its proper divisors (31924010898).

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

18923402862 is a wasteful number, since it uses less digits than its factorization.

18923402862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927 (or 1911 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 18923402862 in words is "eighteen billion, nine hundred twenty-three million, four hundred two thousand, eight hundred sixty-two".