188963968418 has 24 divisors (see below), whose sum is σ = 316947414000. Its totient is φ = 84243993408.

The previous prime is 188963968409. The next prime is 188963968429. The reversal of 188963968418 is 814869369881.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8592368 + ... + 8614331.

It is an arithmetic number, because the mean of its divisors is an integer number (13206142250).

Almost surely, 2^188963968418 is an apocalyptic number.

188963968418 is a deficient number, since it is larger than the sum of its proper divisors (127983445582).

188963968418 is a wasteful number, since it uses less digits than its factorization.

188963968418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17206754 (or 17206737 counting only the distinct ones).

The product of its digits is 143327232, while the sum is 71.

The spelling of 188963968418 in words is "one hundred eighty-eight billion, nine hundred sixty-three million, nine hundred sixty-eight thousand, four hundred eighteen".