189338994 has 24 divisors (see below), whose sum is σ = 441791532. Its totient is φ = 58258080.

The previous prime is 189338987. The next prime is 189339001. The reversal of 189338994 is 499833981.

It is an interprime number because it is at equal distance from previous prime (189338987) and next prime (189339001).

It can be written as a sum of positive squares in 2 ways, for example, as 142922025 + 46416969 = 11955^2 + 6813^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 189338994.

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 11 ways as a sum of consecutive naturals, for example, 404337 + ... + 404804.

Almost surely, 2^189338994 is an apocalyptic number.

189338994 is an abundant number, since it is smaller than the sum of its proper divisors (252452538).

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

189338994 is a wasteful number, since it uses less digits than its factorization.

189338994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809162 (or 809159 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 189338994 is about 13760.0506539765. The cubic root of 189338994 is about 574.2222568821. Note that the first 4 decimals are identical.

The spelling of 189338994 in words is "one hundred eighty-nine million, three hundred thirty-eight thousand, nine hundred ninety-four".