190968761 has 2 divisors, whose sum is σ = 190968762. Its totient is φ = 190968760.

The previous prime is 190968751. The next prime is 190968809. The reversal of 190968761 is 167869091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 144456361 + 46512400 = 12019^2 + 6820^2 .

It is a cyclic number.

It is not a de Polignac number, because 190968761 - 2⁶ = 190968697 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (190968721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95484380 + 95484381.

It is an arithmetic number, because the mean of its divisors is an integer number (95484381).

Almost surely, 2^190968761 is an apocalyptic number.

It is an amenable number.

190968761 is a deficient number, since it is larger than the sum of its proper divisors (1).

190968761 is an equidigital number, since it uses as much as digits as its factorization.

190968761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 190968761 is about 13819.1447275148. The cubic root of 190968761 is about 575.8651234238.

The spelling of 190968761 in words is "one hundred ninety million, nine hundred sixty-eight thousand, seven hundred sixty-one".