1315006643 has 2 divisors, whose sum is σ = 1315006644. Its totient is φ = 1315006642.

The previous prime is 1315006579. The next prime is 1315006681. The reversal of 1315006643 is 3466005131.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (3466005131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1315006643 - 2⁶ = 1315006579 is a prime.

It is a super-2 number, since 2×1315006643² = 3458484942268258898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1315002643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657503321 + 657503322.

It is an arithmetic number, because the mean of its divisors is an integer number (657503322).

Almost surely, 2^1315006643 is an apocalyptic number.

1315006643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315006643 is an equidigital number, since it uses as much as digits as its factorization.

1315006643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 1315006643 is about 36263.0203237403. The cubic root of 1315006643 is about 1095.5763506730.

The spelling of 1315006643 in words is "one billion, three hundred fifteen million, six thousand, six hundred forty-three".