1964594942623 has 2 divisors, whose sum is σ = 1964594942624. Its totient is φ = 1964594942622.

The previous prime is 1964594942521. The next prime is 1964594942641. The reversal of 1964594942623 is 3262494954691.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1964594942623 - 2²⁹ = 1964058071711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1964594942923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 982297471311 + 982297471312.

It is an arithmetic number, because the mean of its divisors is an integer number (982297471312).

Almost surely, 2^{1964594942623} is an apocalyptic number.

1964594942623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1964594942623 is an equidigital number, since it uses as much as digits as its factorization.

1964594942623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 100776960, while the sum is 64.

The spelling of 1964594942623 in words is "one trillion, nine hundred sixty-four billion, five hundred ninety-four million, nine hundred forty-two thousand, six hundred twenty-three".