189918911013 has 16 divisors (see below), whose sum is σ = 274074460800. Its totient is φ = 116285868864.

The previous prime is 189918910997. The next prime is 189918911029. The reversal of 189918911013 is 310119819981.

It is an interprime number because it is at equal distance from previous prime (189918910997) and next prime (189918911029).

It is not a de Polignac number, because 189918911013 - 2⁴ = 189918910997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189918913013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12227706 + ... + 12243227.

It is an arithmetic number, because the mean of its divisors is an integer number (17129653800).

Almost surely, 2^189918911013 is an apocalyptic number.

189918911013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

189918911013 is a deficient number, since it is larger than the sum of its proper divisors (84155549787).

189918911013 is a wasteful number, since it uses less digits than its factorization.

189918911013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24471148.

The product of its (nonzero) digits is 139968, while the sum is 51.

The spelling of 189918911013 in words is "one hundred eighty-nine billion, nine hundred eighteen million, nine hundred eleven thousand, thirteen".