1312654019 has 2 divisors, whose sum is σ = 1312654020. Its totient is φ = 1312654018.

The previous prime is 1312654009. The next prime is 1312654033. The reversal of 1312654019 is 9104562131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1312654019 - 2¹⁶ = 1312588483 is a prime.

It is a super-2 number, since 2×1312654019² = 3446121147193704722, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1312654009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656327009 + 656327010.

It is an arithmetic number, because the mean of its divisors is an integer number (656327010).

Almost surely, 2^1312654019 is an apocalyptic number.

1312654019 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312654019 is an equidigital number, since it uses as much as digits as its factorization.

1312654019 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 32.

The square root of 1312654019 is about 36230.5674672644. The cubic root of 1312654019 is about 1094.9226105450.

The spelling of 1312654019 in words is "one billion, three hundred twelve million, six hundred fifty-four thousand, nineteen".