189623430 has 40 divisors (see below), whose sum is σ = 509878512. Its totient is φ = 50566032.

The previous prime is 189623411. The next prime is 189623459. The reversal of 189623430 is 34326981.

189623430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 116242 + ... + 117861.

Almost surely, 2^189623430 is an apocalyptic number.

189623430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189623430 is an abundant number, since it is smaller than the sum of its proper divisors (320255082).

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

189623430 is a wasteful number, since it uses less digits than its factorization.

189623430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234122 (or 234113 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 189623430 is about 13770.3823476329. The cubic root of 189623430 is about 574.5096563218.

The spelling of 189623430 in words is "one hundred eighty-nine million, six hundred twenty-three thousand, four hundred thirty".