764950690181 has 2 divisors, whose sum is σ = 764950690182. Its totient is φ = 764950690180.

The previous prime is 764950690139. The next prime is 764950690199. The reversal of 764950690181 is 181096059467.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 677551228225 + 87399461956 = 823135^2 + 295634^2 .

It is a cyclic number.

It is not a de Polignac number, because 764950690181 - 2¹⁸ = 764950428037 is a prime.

It is a super-2 number, since 2×764950690181² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (764950690781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382475345090 + 382475345091.

It is an arithmetic number, because the mean of its divisors is an integer number (382475345091).

Almost surely, 2^764950690181 is an apocalyptic number.

It is an amenable number.

764950690181 is a deficient number, since it is larger than the sum of its proper divisors (1).

764950690181 is an equidigital number, since it uses as much as digits as its factorization.

764950690181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 56.

The spelling of 764950690181 in words is "seven hundred sixty-four billion, nine hundred fifty million, six hundred ninety thousand, one hundred eighty-one".