189456677 has 2 divisors, whose sum is σ = 189456678. Its totient is φ = 189456676.

The previous prime is 189456649. The next prime is 189456679. The reversal of 189456677 is 776654981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114789796 + 74666881 = 10714^2 + 8641^2 .

It is a cyclic number.

It is not a de Polignac number, because 189456677 - 2²⁴ = 172679461 is a prime.

Together with 189456679, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189456679) by changing a digit.

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 as a sum of consecutive naturals, namely, 94728338 + 94728339.

It is an arithmetic number, because the mean of its divisors is an integer number (94728339).

Almost surely, 2^189456677 is an apocalyptic number.

It is an amenable number.

189456677 is a deficient number, since it is larger than the sum of its proper divisors (1).

189456677 is an equidigital number, since it uses as much as digits as its factorization.

189456677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2540160, while the sum is 53.

The square root of 189456677 is about 13764.3262457703. The cubic root of 189456677 is about 574.3412008648.

The spelling of 189456677 in words is "one hundred eighty-nine million, four hundred fifty-six thousand, six hundred seventy-seven".