1313220619 has 2 divisors, whose sum is σ = 1313220620. Its totient is φ = 1313220618.

The previous prime is 1313220599. The next prime is 1313220637. The reversal of 1313220619 is 9160223131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1313220619 - 2¹³ = 1313212427 is a prime.

It is a super-2 number, since 2×1313220619² = 3449096788333486322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1313220679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656610309 + 656610310.

It is an arithmetic number, because the mean of its divisors is an integer number (656610310).

Almost surely, 2^1313220619 is an apocalyptic number.

1313220619 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313220619 is an equidigital number, since it uses as much as digits as its factorization.

1313220619 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 1313220619 is about 36238.3859877892. The cubic root of 1313220619 is about 1095.0801270223.

The spelling of 1313220619 in words is "one billion, three hundred thirteen million, two hundred twenty thousand, six hundred nineteen".