319406597479 has 2 divisors, whose sum is σ = 319406597480. Its totient is φ = 319406597478.

The previous prime is 319406597449. The next prime is 319406597551. The reversal of 319406597479 is 974795604913.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 319406597479 - 2¹³ = 319406589287 is a prime.

It is a super-2 number, since 2×319406597479² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 319406597479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (319406597449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159703298739 + 159703298740.

It is an arithmetic number, because the mean of its divisors is an integer number (159703298740).

Almost surely, 2^319406597479 is an apocalyptic number.

319406597479 is a deficient number, since it is larger than the sum of its proper divisors (1).

319406597479 is an equidigital number, since it uses as much as digits as its factorization.

319406597479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51438240, while the sum is 64.

The spelling of 319406597479 in words is "three hundred nineteen billion, four hundred six million, five hundred ninety-seven thousand, four hundred seventy-nine".