390534908516 has 6 divisors (see below), whose sum is σ = 683436089910. Its totient is φ = 195267454256.

The previous prime is 390534908503. The next prime is 390534908557. The reversal of 390534908516 is 615809435093.

It can be written as a sum of positive squares in only one way, i.e., 384214022500 + 6320886016 = 619850^2 + 79504^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48816863561 + ... + 48816863568.

It is an arithmetic number, because the mean of its divisors is an integer number (113906014985).

Almost surely, 2^390534908516 is an apocalyptic number.

It is an amenable number.

390534908516 is a deficient number, since it is larger than the sum of its proper divisors (292901181394).

390534908516 is a wasteful number, since it uses less digits than its factorization.

390534908516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97633727133 (or 97633727131 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 53.

The spelling of 390534908516 in words is "three hundred ninety billion, five hundred thirty-four million, nine hundred eight thousand, five hundred sixteen".