1319391690539 has 16 divisors (see below), whose sum is σ = 1470427499520. Its totient is φ = 1175464940160.

The previous prime is 1319391690503. The next prime is 1319391690557. The reversal of 1319391690539 is 9350961939131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1319391690539 is a prime.

It is a super-2 number, since 2×1319391690539² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1319391690569) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 361769 + ... + 1664229.

It is an arithmetic number, because the mean of its divisors is an integer number (91901718720).

Almost surely, 2^{1319391690539} is an apocalyptic number.

1319391690539 is a deficient number, since it is larger than the sum of its proper divisors (151035808981).

1319391690539 is a wasteful number, since it uses less digits than its factorization.

1319391690539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305190.

The product of its (nonzero) digits is 5314410, while the sum is 59.

The spelling of 1319391690539 in words is "one trillion, three hundred nineteen billion, three hundred ninety-one million, six hundred ninety thousand, five hundred thirty-nine".