189123996160 has 160 divisors (see below), whose sum is σ = 497178000000. Its totient is φ = 68424744960.

The previous prime is 189123996157. The next prime is 189123996289. The reversal of 189123996160 is 61699321981.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (55).

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, 5586966 + ... + 5620714.

It is an arithmetic number, because the mean of its divisors is an integer number (3107362500).

Almost surely, 2^189123996160 is an apocalyptic number.

189123996160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189123996160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248589000000).

189123996160 is an abundant number, since it is smaller than the sum of its proper divisors (308054003840).

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

189123996160 is a wasteful number, since it uses less digits than its factorization.

189123996160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33982 (or 33966 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 55.

The spelling of 189123996160 in words is "one hundred eighty-nine billion, one hundred twenty-three million, nine hundred ninety-six thousand, one hundred sixty".