1979845319 has 2 divisors, whose sum is σ = 1979845320. Its totient is φ = 1979845318.

The previous prime is 1979845271. The next prime is 1979845333. The reversal of 1979845319 is 9135489791.

It is a strong prime.

It is an emirp because it is prime and its reverse (9135489791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1979845319 - 2²⁸ = 1711409863 is a prime.

It is a super-2 number, since 2×1979845319² = 7839574974332423522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1979845019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 989922659 + 989922660.

It is an arithmetic number, because the mean of its divisors is an integer number (989922660).

Almost surely, 2^1979845319 is an apocalyptic number.

1979845319 is a deficient number, since it is larger than the sum of its proper divisors (1).

1979845319 is an equidigital number, since it uses as much as digits as its factorization.

1979845319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2449440, while the sum is 56.

The square root of 1979845319 is about 44495.4527901447. The cubic root of 1979845319 is about 1255.6745354572.

The spelling of 1979845319 in words is "one billion, nine hundred seventy-nine million, eight hundred forty-five thousand, three hundred nineteen".