253964863 has 2 divisors, whose sum is σ = 253964864. Its totient is φ = 253964862.

The previous prime is 253964839. The next prime is 253964881. The reversal of 253964863 is 368469352.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253964863 - 2⁵ = 253964831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253964833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126982431 + 126982432.

It is an arithmetic number, because the mean of its divisors is an integer number (126982432).

Almost surely, 2^253964863 is an apocalyptic number.

253964863 is a deficient number, since it is larger than the sum of its proper divisors (1).

253964863 is an equidigital number, since it uses as much as digits as its factorization.

253964863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 933120, while the sum is 46.

The square root of 253964863 is about 15936.2750666522. The cubic root of 253964863 is about 633.2733492282.

The spelling of 253964863 in words is "two hundred fifty-three million, nine hundred sixty-four thousand, eight hundred sixty-three".