1940164458779 has 2 divisors, whose sum is σ = 1940164458780. Its totient is φ = 1940164458778.

The previous prime is 1940164458721. The next prime is 1940164458809. The reversal of 1940164458779 is 9778544610491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1940164458779 - 2²⁸ = 1939896023323 is a prime.

It is not a weakly prime, because it can be changed into another prime (1940164458179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 970082229389 + 970082229390.

It is an arithmetic number, because the mean of its divisors is an integer number (970082229390).

Almost surely, 2^{1940164458779} is an apocalyptic number.

1940164458779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1940164458779 is an equidigital number, since it uses as much as digits as its factorization.

1940164458779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60963840, while the sum is 65.

The spelling of 1940164458779 in words is "one trillion, nine hundred forty billion, one hundred sixty-four million, four hundred fifty-eight thousand, seven hundred seventy-nine".