189315127 has 2 divisors, whose sum is σ = 189315128. Its totient is φ = 189315126.

The previous prime is 189315101. The next prime is 189315143. The reversal of 189315127 is 721513981.

189315127 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189315127 is a prime.

It is a super-2 number, since 2×189315127² = 71680434622052258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189315157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94657563 + 94657564.

It is an arithmetic number, because the mean of its divisors is an integer number (94657564).

Almost surely, 2^189315127 is an apocalyptic number.

189315127 is a deficient number, since it is larger than the sum of its proper divisors (1).

189315127 is an equidigital number, since it uses as much as digits as its factorization.

189315127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 37.

The square root of 189315127 is about 13759.1833696626. The cubic root of 189315127 is about 574.1981281343.

It can be divided in two parts, 1893 and 15127, that added together give a triangular number (17020 = T₁₈₄).

The spelling of 189315127 in words is "one hundred eighty-nine million, three hundred fifteen thousand, one hundred twenty-seven".