1253045909 has 2 divisors, whose sum is σ = 1253045910. Its totient is φ = 1253045908.

The previous prime is 1253045873. The next prime is 1253045917. The reversal of 1253045909 is 9095403521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1193909809 + 59136100 = 34553^2 + 7690^2 .

It is a cyclic number.

It is not a de Polignac number, because 1253045909 - 2²⁸ = 984610453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1253845909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626522954 + 626522955.

It is an arithmetic number, because the mean of its divisors is an integer number (626522955).

Almost surely, 2^1253045909 is an apocalyptic number.

It is an amenable number.

1253045909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253045909 is an equidigital number, since it uses as much as digits as its factorization.

1253045909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48600, while the sum is 38.

The square root of 1253045909 is about 35398.3885085183. The cubic root of 1253045909 is about 1078.0915968972.

The spelling of 1253045909 in words is "one billion, two hundred fifty-three million, forty-five thousand, nine hundred nine".