1253737651 has 2 divisors, whose sum is σ = 1253737652. Its totient is φ = 1253737650.

The previous prime is 1253737649. The next prime is 1253737679. The reversal of 1253737651 is 1567373521.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1253737651 - 2¹ = 1253737649 is a prime.

Together with 1253737649, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1253737601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626868825 + 626868826.

It is an arithmetic number, because the mean of its divisors is an integer number (626868826).

Almost surely, 2^1253737651 is an apocalyptic number.

1253737651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253737651 is an equidigital number, since it uses as much as digits as its factorization.

1253737651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 132300, while the sum is 40.

The square root of 1253737651 is about 35408.1579724221. The cubic root of 1253737651 is about 1078.2899466522.

The spelling of 1253737651 in words is "one billion, two hundred fifty-three million, seven hundred thirty-seven thousand, six hundred fifty-one".