189554688 has 112 divisors (see below), whose sum is σ = 562264560. Its totient is φ = 63111168.

The previous prime is 189554657. The next prime is 189554723. The reversal of 189554688 is 886455981.

It is a happy number.

189554688 is a `hidden beast` number, since 1 + 8 + 9 + 554 + 6 + 88 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220756 + ... + 221612.

Almost surely, 2^189554688 is an apocalyptic number.

189554688 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189554688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281132280).

189554688 is an abundant number, since it is smaller than the sum of its proper divisors (372709872).

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

189554688 is an frugal number, since it uses more digits than its factorization.

189554688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892 (or 862 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 54.

The square root of 189554688 is about 13767.8861122541. The cubic root of 189554688 is about 574.4402244728.

The spelling of 189554688 in words is "one hundred eighty-nine million, five hundred fifty-four thousand, six hundred eighty-eight".