189019056905 has 16 divisors (see below), whose sum is σ = 262349345664. Its totient is φ = 128051462400.

The previous prime is 189019056871. The next prime is 189019056931. The reversal of 189019056905 is 509650910981.

It is not a de Polignac number, because 189019056905 - 2⁶ = 189019056841 is a prime.

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, 32530496 + ... + 32536305.

It is an arithmetic number, because the mean of its divisors is an integer number (16396834104).

Almost surely, 2^189019056905 is an apocalyptic number.

It is an amenable number.

189019056905 is a deficient number, since it is larger than the sum of its proper divisors (73330288759).

189019056905 is an equidigital number, since it uses as much as digits as its factorization.

189019056905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65066896.

The product of its (nonzero) digits is 874800, while the sum is 53.

The spelling of 189019056905 in words is "one hundred eighty-nine billion, nineteen million, fifty-six thousand, nine hundred five".