379891663 has 2 divisors, whose sum is σ = 379891664. Its totient is φ = 379891662.

The previous prime is 379891601. The next prime is 379891693. The reversal of 379891663 is 366198973.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-379891663 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 379891663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (379891693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189945831 + 189945832.

It is an arithmetic number, because the mean of its divisors is an integer number (189945832).

Almost surely, 2^379891663 is an apocalyptic number.

379891663 is a deficient number, since it is larger than the sum of its proper divisors (1).

379891663 is an equidigital number, since it uses as much as digits as its factorization.

379891663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 52.

The square root of 379891663 is about 19490.8097061153. The cubic root of 379891663 is about 724.2468043070.

The spelling of 379891663 in words is "three hundred seventy-nine million, eight hundred ninety-one thousand, six hundred sixty-three".