1253902679 has 2 divisors, whose sum is σ = 1253902680. Its totient is φ = 1253902678.

The previous prime is 1253902621. The next prime is 1253902681. The reversal of 1253902679 is 9762093521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1253902679 - 2⁸ = 1253902423 is a prime.

It is a Sophie Germain prime.

Together with 1253902681, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1253902079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626951339 + 626951340.

It is an arithmetic number, because the mean of its divisors is an integer number (626951340).

Almost surely, 2^1253902679 is an apocalyptic number.

1253902679 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253902679 is an equidigital number, since it uses as much as digits as its factorization.

1253902679 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 204120, while the sum is 44.

The square root of 1253902679 is about 35410.4882626603. The cubic root of 1253902679 is about 1078.3372559188.

The spelling of 1253902679 in words is "one billion, two hundred fifty-three million, nine hundred two thousand, six hundred seventy-nine".