1513706641 has 2 divisors, whose sum is σ = 1513706642. Its totient is φ = 1513706640.

The previous prime is 1513706633. The next prime is 1513706669. The reversal of 1513706641 is 1466073151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 942735616 + 570971025 = 30704^2 + 23895^2 .

It is an emirp because it is prime and its reverse (1466073151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1513706641 - 2³ = 1513706633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1513706597 and 1513706606.

It is not a weakly prime, because it can be changed into another prime (1513709641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 756853320 + 756853321.

It is an arithmetic number, because the mean of its divisors is an integer number (756853321).

Almost surely, 2^1513706641 is an apocalyptic number.

It is an amenable number.

1513706641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1513706641 is an equidigital number, since it uses as much as digits as its factorization.

1513706641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 1513706641 is about 38906.3830367203. The cubic root of 1513706641 is about 1148.1903841659.

Adding to 1513706641 its reverse (1466073151), we get a palindrome (2979779792).

The spelling of 1513706641 in words is "one billion, five hundred thirteen million, seven hundred six thousand, six hundred forty-one".