189416131 has 2 divisors, whose sum is σ = 189416132. Its totient is φ = 189416130.

The previous prime is 189416113. The next prime is 189416173. The reversal of 189416131 is 131614981.

Together with previous prime (189416113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (131614981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 189416131 - 2⁹ = 189415619 is a prime.

It is a super-2 number, since 2×189416131² = 71756941366018322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (189410131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94708065 + 94708066.

It is an arithmetic number, because the mean of its divisors is an integer number (94708066).

Almost surely, 2^189416131 is an apocalyptic number.

189416131 is a deficient number, since it is larger than the sum of its proper divisors (1).

189416131 is an equidigital number, since it uses as much as digits as its factorization.

189416131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 34.

The square root of 189416131 is about 13762.8533015505. The cubic root of 189416131 is about 574.3002259743.

It can be divided in two parts, 18 and 9416131, that added together give a palindrome (9416149).

The spelling of 189416131 in words is "one hundred eighty-nine million, four hundred sixteen thousand, one hundred thirty-one".