163189138380 has 48 divisors (see below), whose sum is σ = 480978516480. Its totient is φ = 41226729408.

The previous prime is 163189138379. The next prime is 163189138403. The reversal of 163189138380 is 83831981361.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71573044 + ... + 71575323.

It is an arithmetic number, because the mean of its divisors is an integer number (10020385760).

Almost surely, 2^163189138380 is an apocalyptic number.

163189138380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163189138380 is an abundant number, since it is smaller than the sum of its proper divisors (317789378100).

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

163189138380 is a wasteful number, since it uses less digits than its factorization.

163189138380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143148398 (or 143148396 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 51.

The spelling of 163189138380 in words is "one hundred sixty-three billion, one hundred eighty-nine million, one hundred thirty-eight thousand, three hundred eighty".