256414619 has 2 divisors, whose sum is σ = 256414620. Its totient is φ = 256414618.

The previous prime is 256414573. The next prime is 256414661. The reversal of 256414619 is 916414652.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 256414619 - 2²⁰ = 255366043 is a prime.

It is a super-2 number, since 2×256414619² = 131496913673830322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (256414819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 128207309 + 128207310.

It is an arithmetic number, because the mean of its divisors is an integer number (128207310).

Almost surely, 2^256414619 is an apocalyptic number.

256414619 is a deficient number, since it is larger than the sum of its proper divisors (1).

256414619 is an equidigital number, since it uses as much as digits as its factorization.

256414619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The square root of 256414619 is about 16012.9516017504. The cubic root of 256414619 is about 635.3030310126.

The spelling of 256414619 in words is "two hundred fifty-six million, four hundred fourteen thousand, six hundred nineteen".