1516249439 has 2 divisors, whose sum is σ = 1516249440. Its totient is φ = 1516249438.

The previous prime is 1516249433. The next prime is 1516249459. The reversal of 1516249439 is 9349426151.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1516249439 - 2⁸ = 1516249183 is a prime.

It is a super-2 number, since 2×1516249439² = 4598024722535629442, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1516249439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1516249433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 758124719 + 758124720.

It is an arithmetic number, because the mean of its divisors is an integer number (758124720).

Almost surely, 2^1516249439 is an apocalyptic number.

1516249439 is a deficient number, since it is larger than the sum of its proper divisors (1).

1516249439 is an equidigital number, since it uses as much as digits as its factorization.

1516249439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 44.

The square root of 1516249439 is about 38939.0477413098. The cubic root of 1516249439 is about 1148.8329531683.

The spelling of 1516249439 in words is "one billion, five hundred sixteen million, two hundred forty-nine thousand, four hundred thirty-nine".