189027331 has 2 divisors, whose sum is σ = 189027332. Its totient is φ = 189027330.

The previous prime is 189027313. The next prime is 189027379. The reversal of 189027331 is 133720981.

Together with previous prime (189027313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189027331 - 2⁵ = 189027299 is a prime.

It is a super-2 number, since 2×189027331² = 71462663729967122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (189021331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94513665 + 94513666.

It is an arithmetic number, because the mean of its divisors is an integer number (94513666).

Almost surely, 2^189027331 is an apocalyptic number.

189027331 is a deficient number, since it is larger than the sum of its proper divisors (1).

189027331 is an equidigital number, since it uses as much as digits as its factorization.

189027331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 189027331 is about 13748.7210677939. The cubic root of 189027331 is about 573.9070161027.

The spelling of 189027331 in words is "one hundred eighty-nine million, twenty-seven thousand, three hundred thirty-one".