189361438 has 16 divisors (see below), whose sum is σ = 338734080. Its totient is φ = 77626296.

The previous prime is 189361427. The next prime is 189361441. The reversal of 189361438 is 834163981.

It is a junction number, because it is equal to n+sod(n) for n = 189361394 and 189361403.

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, 293718 + ... + 294361.

It is an arithmetic number, because the mean of its divisors is an integer number (21170880).

Almost surely, 2^189361438 is an apocalyptic number.

189361438 is a deficient number, since it is larger than the sum of its proper divisors (149372642).

189361438 is a wasteful number, since it uses less digits than its factorization.

189361438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588111.

The product of its digits is 124416, while the sum is 43.

The square root of 189361438 is about 13760.8661791328. The cubic root of 189361438 is about 574.2449451741.

The spelling of 189361438 in words is "one hundred eighty-nine million, three hundred sixty-one thousand, four hundred thirty-eight".