253876813 has 2 divisors, whose sum is σ = 253876814. Its totient is φ = 253876812.

The previous prime is 253876811. The next prime is 253876853. The reversal of 253876813 is 318678352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 246270249 + 7606564 = 15693^2 + 2758^2 .

It is a cyclic number.

It is not a de Polignac number, because 253876813 - 2¹ = 253876811 is a prime.

Together with 253876811, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 253876813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253876811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126938406 + 126938407.

It is an arithmetic number, because the mean of its divisors is an integer number (126938407).

Almost surely, 2^253876813 is an apocalyptic number.

It is an amenable number.

253876813 is a deficient number, since it is larger than the sum of its proper divisors (1).

253876813 is an equidigital number, since it uses as much as digits as its factorization.

253876813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 43.

The square root of 253876813 is about 15933.5122618963. The cubic root of 253876813 is about 633.2001551611.

The spelling of 253876813 in words is "two hundred fifty-three million, eight hundred seventy-six thousand, eight hundred thirteen".