1253379261 has 16 divisors (see below), whose sum is σ = 1701085568. Its totient is φ = 820670400.

The previous prime is 1253379241. The next prime is 1253379269. The reversal of 1253379261 is 1629733521.

It is a happy number.

1253379261 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1253379261 - 2⁵ = 1253379229 is a prime.

It is a super-2 number, since 2×1253379261² = 3141919143809812242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253379269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128331 + ... + 137751.

It is an arithmetic number, because the mean of its divisors is an integer number (106317848).

Almost surely, 2^1253379261 is an apocalyptic number.

It is an amenable number.

1253379261 is a deficient number, since it is larger than the sum of its proper divisors (447706307).

1253379261 is an equidigital number, since it uses as much as digits as its factorization.

1253379261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10212.

The product of its digits is 68040, while the sum is 39.

The square root of 1253379261 is about 35403.0967713278. The cubic root of 1253379261 is about 1078.1871911934.

The spelling of 1253379261 in words is "one billion, two hundred fifty-three million, three hundred seventy-nine thousand, two hundred sixty-one".