1979131967 has 2 divisors, whose sum is σ = 1979131968. Its totient is φ = 1979131966.

The previous prime is 1979131949. The next prime is 1979131997. The reversal of 1979131967 is 7691319791.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1979131967 - 2¹⁶ = 1979066431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1979131907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 989565983 + 989565984.

It is an arithmetic number, because the mean of its divisors is an integer number (989565984).

Almost surely, 2^1979131967 is an apocalyptic number.

1979131967 is a deficient number, since it is larger than the sum of its proper divisors (1).

1979131967 is an equidigital number, since it uses as much as digits as its factorization.

1979131967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 642978, while the sum is 53.

The square root of 1979131967 is about 44487.4360578355. The cubic root of 1979131967 is about 1255.5237079263.

The spelling of 1979131967 in words is "one billion, nine hundred seventy-nine million, one hundred thirty-one thousand, nine hundred sixty-seven".