189542430 has 192 divisors, whose sum is σ = 637797888. Its totient is φ = 39346560.

The previous prime is 189542429. The next prime is 189542449. The reversal of 189542430 is 34245981.

189542430 is a `hidden beast` number, since 1 + 89 + 542 + 4 + 30 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 186604 + ... + 187616.

It is an arithmetic number, because the mean of its divisors is an integer number (3321864).

Almost surely, 2^189542430 is an apocalyptic number.

189542430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 189542430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318898944).

189542430 is an abundant number, since it is smaller than the sum of its proper divisors (448255458).

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

189542430 is a wasteful number, since it uses less digits than its factorization.

189542430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053 (or 1041 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 189542430 is about 13767.4409386785. The cubic root of 189542430 is about 574.4278416962.

The spelling of 189542430 in words is "one hundred eighty-nine million, five hundred forty-two thousand, four hundred thirty".