1254057913 has 4 divisors (see below), whose sum is σ = 1254156660. Its totient is φ = 1253959168.

The previous prime is 1254057829. The next prime is 1254057923. The reversal of 1254057913 is 3197504521.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 579461184 + 674596729 = 24072^2 + 25973^2 .

It is a cyclic number.

It is not a de Polignac number, because 1254057913 - 2⁹ = 1254057401 is a prime.

It is a super-2 number, since 2×1254057913² = 3145322498315831138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1254057923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26920 + ... + 56857.

It is an arithmetic number, because the mean of its divisors is an integer number (313539165).

Almost surely, 2^1254057913 is an apocalyptic number.

It is an amenable number.

1254057913 is a deficient number, since it is larger than the sum of its proper divisors (98747).

1254057913 is an equidigital number, since it uses as much as digits as its factorization.

1254057913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98746.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 1254057913 is about 35412.6801160262. The cubic root of 1254057913 is about 1078.3817537099.

The spelling of 1254057913 in words is "one billion, two hundred fifty-four million, fifty-seven thousand, nine hundred thirteen".