18775465590 has 64 divisors (see below), whose sum is σ = 51647030784. Its totient is φ = 4279150848.

The previous prime is 18775465561. The next prime is 18775465603. The reversal of 18775465590 is 9556457781.

It is a self number, because there is not a number n which added to its sum of digits gives 18775465590.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 55959 + ... + 201698.

It is an arithmetic number, because the mean of its divisors is an integer number (806984856).

Almost surely, 2^18775465590 is an apocalyptic number.

18775465590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18775465590 is an abundant number, since it is smaller than the sum of its proper divisors (32871565194).

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

18775465590 is a wasteful number, since it uses less digits than its factorization.

18775465590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258021.

The product of its (nonzero) digits is 10584000, while the sum is 57.

The spelling of 18775465590 in words is "eighteen billion, seven hundred seventy-five million, four hundred sixty-five thousand, five hundred ninety".