189423411983 has 32 divisors (see below), whose sum is σ = 215986176000. Its totient is φ = 164814604416.

The previous prime is 189423411977. The next prime is 189423412069. The reversal of 189423411983 is 389114324981.

It is a Cunningham number, because it is equal to 435228²-1.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189423411983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189423411953) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5641238 + ... + 5674716.

It is an arithmetic number, because the mean of its divisors is an integer number (6749568000).

Almost surely, 2^189423411983 is an apocalyptic number.

189423411983 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

189423411983 is a deficient number, since it is larger than the sum of its proper divisors (26562764017).

189423411983 is a wasteful number, since it uses less digits than its factorization.

189423411983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33791.

The product of its digits is 1492992, while the sum is 53.

The spelling of 189423411983 in words is "one hundred eighty-nine billion, four hundred twenty-three million, four hundred eleven thousand, nine hundred eighty-three".