189422438 has 16 divisors (see below), whose sum is σ = 302454000. Its totient is φ = 88716672.

The previous prime is 189422423. The next prime is 189422447. The reversal of 189422438 is 834224981.

It is a junction number, because it is equal to n+sod(n) for n = 189422395 and 189422404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24623 + ... + 31386.

It is an arithmetic number, because the mean of its divisors is an integer number (18903375).

Almost surely, 2^189422438 is an apocalyptic number.

189422438 is a deficient number, since it is larger than the sum of its proper divisors (113031562).

189422438 is a wasteful number, since it uses less digits than its factorization.

189422438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56119.

The product of its digits is 110592, while the sum is 41.

The square root of 189422438 is about 13763.0824309091. The cubic root of 189422438 is about 574.3066000730.

The spelling of 189422438 in words is "one hundred eighty-nine million, four hundred twenty-two thousand, four hundred thirty-eight".