18811089486 has 32 divisors (see below), whose sum is σ = 47774196480. Its totient is φ = 5374596888.

The previous prime is 18811089467. The next prime is 18811089497. The reversal of 18811089486 is 68498011881.

It is a happy number.

18811089486 is a `hidden beast` number, since 1 + 8 + 81 + 1 + 0 + 89 + 486 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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, 24882016 + ... + 24882771.

It is an arithmetic number, because the mean of its divisors is an integer number (1492943640).

Almost surely, 2^18811089486 is an apocalyptic number.

18811089486 is an abundant number, since it is smaller than the sum of its proper divisors (28963106994).

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

18811089486 is a wasteful number, since it uses less digits than its factorization.

18811089486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49764805 (or 49764799 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 54.

The spelling of 18811089486 in words is "eighteen billion, eight hundred eleven million, eighty-nine thousand, four hundred eighty-six".