253965619 has 2 divisors, whose sum is σ = 253965620. Its totient is φ = 253965618.

The previous prime is 253965617. The next prime is 253965623. The reversal of 253965619 is 916569352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 253965619 - 2¹ = 253965617 is a prime.

It is a super-2 number, since 2×253965619² = 128997071268106322, which contains 22 as substring.

Together with 253965617, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (253965617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126982809 + 126982810.

It is an arithmetic number, because the mean of its divisors is an integer number (126982810).

Almost surely, 2^253965619 is an apocalyptic number.

253965619 is a deficient number, since it is larger than the sum of its proper divisors (1).

253965619 is an equidigital number, since it uses as much as digits as its factorization.

253965619 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 437400, while the sum is 46.

The square root of 253965619 is about 15936.2987861046. The cubic root of 253965619 is about 633.2739776014.

The spelling of 253965619 in words is "two hundred fifty-three million, nine hundred sixty-five thousand, six hundred nineteen".