189488013 has 16 divisors (see below), whose sum is σ = 296821056. Its totient is φ = 106007040.

The previous prime is 189488003. The next prime is 189488041. The reversal of 189488013 is 310884981.

It is not a de Polignac number, because 189488013 - 2⁵ = 189487981 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189488003) 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, 220420 + ... + 221277.

It is an arithmetic number, because the mean of its divisors is an integer number (18551316).

Almost surely, 2^189488013 is an apocalyptic number.

189488013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

189488013 is a deficient number, since it is larger than the sum of its proper divisors (107333043).

189488013 is a wasteful number, since it uses less digits than its factorization.

189488013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441724.

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 189488013 is about 13765.4645036047. The cubic root of 189488013 is about 574.3728643283.

The spelling of 189488013 in words is "one hundred eighty-nine million, four hundred eighty-eight thousand, thirteen".