190927808677 has 2 divisors, whose sum is σ = 190927808678. Its totient is φ = 190927808676.

The previous prime is 190927808557. The next prime is 190927808683. The reversal of 190927808677 is 776808729091.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 187134973281 + 3792835396 = 432591^2 + 61586^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190927808677 is a prime.

It is a super-2 number, since 2×190927808677² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190927808777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95463904338 + 95463904339.

It is an arithmetic number, because the mean of its divisors is an integer number (95463904339).

Almost surely, 2^190927808677 is an apocalyptic number.

It is an amenable number.

190927808677 is a deficient number, since it is larger than the sum of its proper divisors (1).

190927808677 is an equidigital number, since it uses as much as digits as its factorization.

190927808677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21337344, while the sum is 64.

The spelling of 190927808677 in words is "one hundred ninety billion, nine hundred twenty-seven million, eight hundred eight thousand, six hundred seventy-seven".