1513639423 has 2 divisors, whose sum is σ = 1513639424. Its totient is φ = 1513639422.

The previous prime is 1513639381. The next prime is 1513639433. The reversal of 1513639423 is 3249363151.

It is a strong prime.

It is an emirp because it is prime and its reverse (3249363151) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1513639423 is a prime.

It is a super-2 number, since 2×1513639423² = 4582208605719545858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1513639433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 756819711 + 756819712.

It is an arithmetic number, because the mean of its divisors is an integer number (756819712).

Almost surely, 2^1513639423 is an apocalyptic number.

1513639423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1513639423 is an equidigital number, since it uses as much as digits as its factorization.

1513639423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 37.

The square root of 1513639423 is about 38905.5191843008. The cubic root of 1513639423 is about 1148.1733883136.

The spelling of 1513639423 in words is "one billion, five hundred thirteen million, six hundred thirty-nine thousand, four hundred twenty-three".