9764646091 has 2 divisors, whose sum is σ = 9764646092. Its totient is φ = 9764646090.

The previous prime is 9764646049. The next prime is 9764646127. The reversal of 9764646091 is 1906464679.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9764646091 - 2²⁷ = 9630428363 is a prime.

It is not a weakly prime, because it can be changed into another prime (9764646191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4882323045 + 4882323046.

It is an arithmetic number, because the mean of its divisors is an integer number (4882323046).

Almost surely, 2^9764646091 is an apocalyptic number.

9764646091 is a deficient number, since it is larger than the sum of its proper divisors (1).

9764646091 is an equidigital number, since it uses as much as digits as its factorization.

9764646091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The square root of 9764646091 is about 98816.2238248356. The cubic root of 9764646091 is about 2137.3985107633.

The spelling of 9764646091 in words is "nine billion, seven hundred sixty-four million, six hundred forty-six thousand, ninety-one".