18770806390 has 16 divisors (see below), whose sum is σ = 38614230432. Its totient is φ = 6435705024.

The previous prime is 18770806387. The next prime is 18770806451. The reversal of 18770806390 is 9360807781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134077119 + ... + 134077258.

It is an arithmetic number, because the mean of its divisors is an integer number (2413389402).

Almost surely, 2^18770806390 is an apocalyptic number.

18770806390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18770806390 is an abundant number, since it is smaller than the sum of its proper divisors (19843424042).

18770806390 is a wasteful number, since it uses less digits than its factorization.

18770806390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268154391.

The product of its (nonzero) digits is 508032, while the sum is 49.

The spelling of 18770806390 in words is "eighteen billion, seven hundred seventy million, eight hundred six thousand, three hundred ninety".