189658080 has 72 divisors (see below), whose sum is σ = 647213112. Its totient is φ = 50575104.

The previous prime is 189658003. The next prime is 189658081. The reversal of 189658080 is 80856981.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189658081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64414 + ... + 67293.

It is an arithmetic number, because the mean of its divisors is an integer number (8989071).

Almost surely, 2^189658080 is an apocalyptic number.

189658080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189658080 is an abundant number, since it is smaller than the sum of its proper divisors (457555032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189658080 is a wasteful number, since it uses less digits than its factorization.

189658080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131728 (or 131717 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The square root of 189658080 is about 13771.6404251636. The cubic root of 189658080 is about 574.5446476855.

The spelling of 189658080 in words is "one hundred eighty-nine million, six hundred fifty-eight thousand, eighty".