1315415081 has 2 divisors, whose sum is σ = 1315415082. Its totient is φ = 1315415080.

The previous prime is 1315415077. The next prime is 1315415113. The reversal of 1315415081 is 1805145131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 736579600 + 578835481 = 27140^2 + 24059^2 .

It is a cyclic number.

It is not a de Polignac number, because 1315415081 - 2² = 1315415077 is a prime.

It is a super-2 number, since 2×1315415081² = 3460633670644473122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1315415051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657707540 + 657707541.

It is an arithmetic number, because the mean of its divisors is an integer number (657707541).

Almost surely, 2^1315415081 is an apocalyptic number.

It is an amenable number.

1315415081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315415081 is an equidigital number, since it uses as much as digits as its factorization.

1315415081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 29.

The square root of 1315415081 is about 36268.6514913362. The cubic root of 1315415081 is about 1095.6897667523.

The spelling of 1315415081 in words is "one billion, three hundred fifteen million, four hundred fifteen thousand, eighty-one".