189500454 has 96 divisors (see below), whose sum is σ = 488726784. Its totient is φ = 52309440.

The previous prime is 189500453. The next prime is 189500501. The reversal of 189500454 is 454005981.

It is a super-2 number, since 2×189500454² = 71820844132412232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189500453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 213199 + ... + 214085.

It is an arithmetic number, because the mean of its divisors is an integer number (5090904).

Almost surely, 2^189500454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189500454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (244363392).

189500454 is an abundant number, since it is smaller than the sum of its proper divisors (299226330).

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

189500454 is a wasteful number, since it uses less digits than its factorization.

189500454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002 (or 999 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 189500454 is about 13765.9163879489. The cubic root of 189500454 is about 574.3854343695.

The spelling of 189500454 in words is "one hundred eighty-nine million, five hundred thousand, four hundred fifty-four".