189738331 has 4 divisors (see below), whose sum is σ = 194866432. Its totient is φ = 184610232.

The previous prime is 189738323. The next prime is 189738337. The reversal of 189738331 is 133837981.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 189738331 - 2³ = 189738323 is a prime.

It is a super-2 number, since 2×189738331² = 72001268501331122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189738337) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2563995 + ... + 2564068.

It is an arithmetic number, because the mean of its divisors is an integer number (48716608).

Almost surely, 2^189738331 is an apocalyptic number.

189738331 is a deficient number, since it is larger than the sum of its proper divisors (5128101).

189738331 is an equidigital number, since it uses as much as digits as its factorization.

189738331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5128100.

The product of its digits is 108864, while the sum is 43.

The square root of 189738331 is about 13774.5537495775. The cubic root of 189738331 is about 574.6256729368.

The spelling of 189738331 in words is "one hundred eighty-nine million, seven hundred thirty-eight thousand, three hundred thirty-one".