1253164009 has 2 divisors, whose sum is σ = 1253164010. Its totient is φ = 1253164008.

The previous prime is 1253164001. The next prime is 1253164021. The reversal of 1253164009 is 9004613521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1202355625 + 50808384 = 34675^2 + 7128^2 .

It is a cyclic number.

It is not a de Polignac number, because 1253164009 - 2³ = 1253164001 is a prime.

It is not a weakly prime, because it can be changed into another prime (1253164001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626582004 + 626582005.

It is an arithmetic number, because the mean of its divisors is an integer number (626582005).

Almost surely, 2^1253164009 is an apocalyptic number.

It is an amenable number.

1253164009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253164009 is an equidigital number, since it uses as much as digits as its factorization.

1253164009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 1253164009 is about 35400.0566242485. The cubic root of 1253164009 is about 1078.1254659988.

The spelling of 1253164009 in words is "one billion, two hundred fifty-three million, one hundred sixty-four thousand, nine".