1979631359 has 2 divisors, whose sum is σ = 1979631360. Its totient is φ = 1979631358.

The previous prime is 1979631343. The next prime is 1979631371. The reversal of 1979631359 is 9531369791.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1979631359 - 2⁴ = 1979631343 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1979631359.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1979631319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 989815679 + 989815680.

It is an arithmetic number, because the mean of its divisors is an integer number (989815680).

Almost surely, 2^1979631359 is an apocalyptic number.

1979631359 is a deficient number, since it is larger than the sum of its proper divisors (1).

1979631359 is an equidigital number, since it uses as much as digits as its factorization.

1979631359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1377810, while the sum is 53.

The square root of 1979631359 is about 44493.0484345589. The cubic root of 1979631359 is about 1255.6293006435.

The spelling of 1979631359 in words is "one billion, nine hundred seventy-nine million, six hundred thirty-one thousand, three hundred fifty-nine".