1252698739 has 2 divisors, whose sum is σ = 1252698740. Its totient is φ = 1252698738.

The previous prime is 1252698721. The next prime is 1252698779. The reversal of 1252698739 is 9378962521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1252698739 - 2¹¹ = 1252696691 is a prime.

It is not a weakly prime, because it can be changed into another prime (1252698779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626349369 + 626349370.

It is an arithmetic number, because the mean of its divisors is an integer number (626349370).

Almost surely, 2^1252698739 is an apocalyptic number.

1252698739 is a deficient number, since it is larger than the sum of its proper divisors (1).

1252698739 is an equidigital number, since it uses as much as digits as its factorization.

1252698739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 52.

The square root of 1252698739 is about 35393.4844145077. The cubic root of 1252698739 is about 1077.9920220323.

The spelling of 1252698739 in words is "one billion, two hundred fifty-two million, six hundred ninety-eight thousand, seven hundred thirty-nine".