1253415091 has 2 divisors, whose sum is σ = 1253415092. Its totient is φ = 1253415090.

The previous prime is 1253415077. The next prime is 1253415133. The reversal of 1253415091 is 1905143521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1253415091 - 2⁹ = 1253414579 is a prime.

It is not a weakly prime, because it can be changed into another prime (1253415011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626707545 + 626707546.

It is an arithmetic number, because the mean of its divisors is an integer number (626707546).

Almost surely, 2^1253415091 is an apocalyptic number.

1253415091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253415091 is an equidigital number, since it uses as much as digits as its factorization.

1253415091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 1253415091 is about 35403.6027968906. The cubic root of 1253415091 is about 1078.1974650400.

The spelling of 1253415091 in words is "one billion, two hundred fifty-three million, four hundred fifteen thousand, ninety-one".