189129468 has 24 divisors (see below), whose sum is σ = 481420800. Its totient is φ = 57311920.

The previous prime is 189129467. The next prime is 189129487. The reversal of 189129468 is 864921981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189129467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 716268 + ... + 716531.

It is an arithmetic number, because the mean of its divisors is an integer number (20059200).

Almost surely, 2^189129468 is an apocalyptic number.

It is an amenable number.

189129468 is an abundant number, since it is smaller than the sum of its proper divisors (292291332).

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

189129468 is a wasteful number, since it uses less digits than its factorization.

189129468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1432817 (or 1432815 counting only the distinct ones).

The product of its digits is 248832, while the sum is 48.

The square root of 189129468 is about 13752.4349843946. The cubic root of 189129468 is about 574.0103637443.

The spelling of 189129468 in words is "one hundred eighty-nine million, one hundred twenty-nine thousand, four hundred sixty-eight".