189746874 has 40 divisors (see below), whose sum is σ = 435077280. Its totient is φ = 61775784.

The previous prime is 189746867. The next prime is 189746899. The reversal of 189746874 is 478647981.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 189746874.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6654 + ... + 20585.

It is an arithmetic number, because the mean of its divisors is an integer number (10876932).

Almost surely, 2^189746874 is an apocalyptic number.

189746874 is an abundant number, since it is smaller than the sum of its proper divisors (245330406).

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

189746874 is a wasteful number, since it uses less digits than its factorization.

189746874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27296 (or 27287 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 189746874 is about 13774.8638468770. The cubic root of 189746874 is about 574.6342970129.

The spelling of 189746874 in words is "one hundred eighty-nine million, seven hundred forty-six thousand, eight hundred seventy-four".