390775050018 has 48 divisors (see below), whose sum is σ = 891596946240. Its totient is φ = 123451856352.

The previous prime is 390775050007. The next prime is 390775050031. The reversal of 390775050018 is 810050577093.

390775050018 is a `hidden beast` number, since 3 + 90 + 7 + 7 + 50 + 500 + 1 + 8 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4284696 + ... + 4374947.

It is an arithmetic number, because the mean of its divisors is an integer number (18574936380).

Almost surely, 2^390775050018 is an apocalyptic number.

390775050018 is an abundant number, since it is smaller than the sum of its proper divisors (500821896222).

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

390775050018 is a wasteful number, since it uses less digits than its factorization.

390775050018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8659783 (or 8659780 counting only the distinct ones).

The product of its (nonzero) digits is 264600, while the sum is 45.

The spelling of 390775050018 in words is "three hundred ninety billion, seven hundred seventy-five million, fifty thousand, eighteen".