2315537729 has 2 divisors, whose sum is σ = 2315537730. Its totient is φ = 2315537728.

The previous prime is 2315537713. The next prime is 2315537753. The reversal of 2315537729 is 9277355132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2313129025 + 2408704 = 48095^2 + 1552^2 .

It is a cyclic number.

It is not a de Polignac number, because 2315537729 - 2⁴ = 2315537713 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2315537729.

It is not a weakly prime, because it can be changed into another prime (2315537779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1157768864 + 1157768865.

It is an arithmetic number, because the mean of its divisors is an integer number (1157768865).

Almost surely, 2^2315537729 is an apocalyptic number.

It is an amenable number.

2315537729 is a deficient number, since it is larger than the sum of its proper divisors (1).

2315537729 is an equidigital number, since it uses as much as digits as its factorization.

2315537729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 396900, while the sum is 44.

The square root of 2315537729 is about 48120.0345905944. The cubic root of 2315537729 is about 1322.9719022093.

The spelling of 2315537729 in words is "two billion, three hundred fifteen million, five hundred thirty-seven thousand, seven hundred twenty-nine".