378772613 has 2 divisors, whose sum is σ = 378772614. Its totient is φ = 378772612.

The previous prime is 378772591. The next prime is 378772633. The reversal of 378772613 is 316277873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 333318049 + 45454564 = 18257^2 + 6742^2 .

It is a cyclic number.

It is not a de Polignac number, because 378772613 - 2⁶ = 378772549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378772633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189386306 + 189386307.

It is an arithmetic number, because the mean of its divisors is an integer number (189386307).

Almost surely, 2^378772613 is an apocalyptic number.

It is an amenable number.

378772613 is a deficient number, since it is larger than the sum of its proper divisors (1).

378772613 is an equidigital number, since it uses as much as digits as its factorization.

378772613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 296352, while the sum is 44.

The square root of 378772613 is about 19462.0814148950. The cubic root of 378772613 is about 723.5349649667.

The spelling of 378772613 in words is "three hundred seventy-eight million, seven hundred seventy-two thousand, six hundred thirteen".