408982061918 has 16 divisors (see below), whose sum is σ = 614739605040. Its totient is φ = 204069155136.

The previous prime is 408982061903. The next prime is 408982061947. The reversal of 408982061918 is 819160289804.

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, 2757293 + ... + 2901831.

It is an arithmetic number, because the mean of its divisors is an integer number (38421225315).

Almost surely, 2^408982061918 is an apocalyptic number.

408982061918 is a deficient number, since it is larger than the sum of its proper divisors (205757543122).

408982061918 is a wasteful number, since it uses less digits than its factorization.

408982061918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147451.

The product of its (nonzero) digits is 1990656, while the sum is 56.

The spelling of 408982061918 in words is "four hundred eight billion, nine hundred eighty-two million, sixty-one thousand, nine hundred eighteen".