1315822451 has 2 divisors, whose sum is σ = 1315822452. Its totient is φ = 1315822450.

The previous prime is 1315822441. The next prime is 1315822463. The reversal of 1315822451 is 1542285131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1315822451 - 2¹⁰ = 1315821427 is a prime.

It is not a weakly prime, because it can be changed into another prime (1315822411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657911225 + 657911226.

It is an arithmetic number, because the mean of its divisors is an integer number (657911226).

Almost surely, 2^1315822451 is an apocalyptic number.

1315822451 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315822451 is an equidigital number, since it uses as much as digits as its factorization.

1315822451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9600, while the sum is 32.

The square root of 1315822451 is about 36274.2670635810. The cubic root of 1315822451 is about 1095.8028628839.

The spelling of 1315822451 in words is "one billion, three hundred fifteen million, eight hundred twenty-two thousand, four hundred fifty-one".