189458900 has 36 divisors (see below), whose sum is σ = 412507452. Its totient is φ = 75528960.

The previous prime is 189458891. The next prime is 189458917. The reversal of 189458900 is 9854981.

It can be written as a sum of positive squares in 6 ways, for example, as 88134544 + 101324356 = 9388^2 + 10066^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28274 + ... + 34326.

Almost surely, 2^189458900 is an apocalyptic number.

189458900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189458900 is an abundant number, since it is smaller than the sum of its proper divisors (223048552).

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

189458900 is a wasteful number, since it uses less digits than its factorization.

189458900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6380 (or 6373 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 189458900 is about 13764.4069977606. The cubic root of 189458900 is about 574.3434472104.

The spelling of 189458900 in words is "one hundred eighty-nine million, four hundred fifty-eight thousand, nine hundred".