189840179012 has 24 divisors (see below), whose sum is σ = 370850585952. Its totient is φ = 84284222400.

The previous prime is 189840179003. The next prime is 189840179017. The reversal of 189840179012 is 210971048981.

It is a happy number.

It is a super-2 number, since 2×189840179012² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (189840179017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50167289 + ... + 50171072.

It is an arithmetic number, because the mean of its divisors is an integer number (15452107748).

Almost surely, 2^189840179012 is an apocalyptic number.

It is an amenable number.

189840179012 is a deficient number, since it is larger than the sum of its proper divisors (181010406940).

189840179012 is a wasteful number, since it uses less digits than its factorization.

189840179012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100338419 (or 100338417 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 50.

The spelling of 189840179012 in words is "one hundred eighty-nine billion, eight hundred forty million, one hundred seventy-nine thousand, twelve".