398878098188 has 12 divisors (see below), whose sum is σ = 709867802280. Its totient is φ = 196058726112.

The previous prime is 398878098187. The next prime is 398878098257. The reversal of 398878098188 is 881890878893.

It is not an unprimeable number, because it can be changed into a prime (398878098187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 845080481 + ... + 845080952.

It is an arithmetic number, because the mean of its divisors is an integer number (59155650190).

Almost surely, 2^398878098188 is an apocalyptic number.

It is an amenable number.

398878098188 is a deficient number, since it is larger than the sum of its proper divisors (310989704092).

398878098188 is a wasteful number, since it uses less digits than its factorization.

398878098188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690161496 (or 1690161494 counting only the distinct ones).

The product of its (nonzero) digits is 445906944, while the sum is 77.

The spelling of 398878098188 in words is "three hundred ninety-eight billion, eight hundred seventy-eight million, ninety-eight thousand, one hundred eighty-eight".