189790791012158 has 128 divisors (see below), whose sum is σ = 342437926579200. Its totient is φ = 77179791080448.

The previous prime is 189790791012149. The next prime is 189790791012167. The reversal of 189790791012158 is 851210197097981.

It is an interprime number because it is at equal distance from previous prime (189790791012149) and next prime (189790791012167).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3434540333 + ... + 3434595591.

It is an arithmetic number, because the mean of its divisors is an integer number (2675296301400).

Almost surely, 2^{189790791012158} is an apocalyptic number.

189790791012158 is a deficient number, since it is larger than the sum of its proper divisors (152647135567042).

189790791012158 is a wasteful number, since it uses less digits than its factorization.

189790791012158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56034.

The product of its (nonzero) digits is 22861440, while the sum is 68.

The spelling of 189790791012158 in words is "one hundred eighty-nine trillion, seven hundred ninety billion, seven hundred ninety-one million, twelve thousand, one hundred fifty-eight".