361879691 has 2 divisors, whose sum is σ = 361879692. Its totient is φ = 361879690.

The previous prime is 361879621. The next prime is 361879703. The reversal of 361879691 is 196978163.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-361879691 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (361879621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180939845 + 180939846.

It is an arithmetic number, because the mean of its divisors is an integer number (180939846).

Almost surely, 2^361879691 is an apocalyptic number.

361879691 is a deficient number, since it is larger than the sum of its proper divisors (1).

361879691 is an equidigital number, since it uses as much as digits as its factorization.

361879691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 50.

The square root of 361879691 is about 19023.1356773798. The cubic root of 361879691 is about 712.6146345153.

The spelling of 361879691 in words is "three hundred sixty-one million, eight hundred seventy-nine thousand, six hundred ninety-one".