1513153261 has 2 divisors, whose sum is σ = 1513153262. Its totient is φ = 1513153260.

The previous prime is 1513153237. The next prime is 1513153267. The reversal of 1513153261 is 1623513151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 911677636 + 601475625 = 30194^2 + 24525^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1513153261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1513153267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 756576630 + 756576631.

It is an arithmetic number, because the mean of its divisors is an integer number (756576631).

Almost surely, 2^1513153261 is an apocalyptic number.

It is an amenable number.

1513153261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1513153261 is an equidigital number, since it uses as much as digits as its factorization.

1513153261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 28.

The square root of 1513153261 is about 38899.2707001044. The cubic root of 1513153261 is about 1148.0504488528.

The spelling of 1513153261 in words is "one billion, five hundred thirteen million, one hundred fifty-three thousand, two hundred sixty-one".