189723001960 has 32 divisors (see below), whose sum is σ = 429432917760. Its totient is φ = 75434771776.

The previous prime is 189723001927. The next prime is 189723001987. The reversal of 189723001960 is 69100327981.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 189723001960.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14194144 + ... + 14207503.

It is an arithmetic number, because the mean of its divisors is an integer number (13419778680).

Almost surely, 2^189723001960 is an apocalyptic number.

189723001960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189723001960 is an abundant number, since it is smaller than the sum of its proper divisors (239709915800).

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

189723001960 is a wasteful number, since it uses less digits than its factorization.

189723001960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28401825 (or 28401821 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 189723001960 in words is "one hundred eighty-nine billion, seven hundred twenty-three million, one thousand, nine hundred sixty".