189538774 has 8 divisors (see below), whose sum is σ = 293479488. Its totient is φ = 91712280.

The previous prime is 189538747. The next prime is 189538801. The reversal of 189538774 is 477835981.

It is an interprime number because it is at equal distance from previous prime (189538747) and next prime (189538801).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1528477 + ... + 1528600.

It is an arithmetic number, because the mean of its divisors is an integer number (36684936).

Almost surely, 2^189538774 is an apocalyptic number.

189538774 is a deficient number, since it is larger than the sum of its proper divisors (103940714).

189538774 is a wasteful number, since it uses less digits than its factorization.

189538774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3057110.

The product of its digits is 1693440, while the sum is 52.

The square root of 189538774 is about 13767.3081610023. The cubic root of 189538774 is about 574.4241483777.

The spelling of 189538774 in words is "one hundred eighty-nine million, five hundred thirty-eight thousand, seven hundred seventy-four".