1253378911 has 8 divisors (see below), whose sum is σ = 1267383600. Its totient is φ = 1239449088.

The previous prime is 1253378899. The next prime is 1253378953. The reversal of 1253378911 is 1198733521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1253378911 - 2¹¹ = 1253376863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253378981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15295 + ... + 52351.

It is an arithmetic number, because the mean of its divisors is an integer number (158422950).

Almost surely, 2^1253378911 is an apocalyptic number.

1253378911 is a deficient number, since it is larger than the sum of its proper divisors (14004689).

1253378911 is a wasteful number, since it uses less digits than its factorization.

1253378911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37433.

The product of its digits is 45360, while the sum is 40.

The square root of 1253378911 is about 35403.0918282570. The cubic root of 1253378911 is about 1078.1870908339.

The spelling of 1253378911 in words is "one billion, two hundred fifty-three million, three hundred seventy-eight thousand, nine hundred eleven".