1256461163 has 8 divisors (see below), whose sum is σ = 1300503600. Its totient is φ = 1212466528.

The previous prime is 1256461159. The next prime is 1256461169. The reversal of 1256461163 is 3611646521.

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 1256461163 - 2² = 1256461159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1256461169) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46445 + ... + 68337.

It is an arithmetic number, because the mean of its divisors is an integer number (162562950).

Almost surely, 2^1256461163 is an apocalyptic number.

1256461163 is a deficient number, since it is larger than the sum of its proper divisors (44042437).

1256461163 is a wasteful number, since it uses less digits than its factorization.

1256461163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23901.

The product of its digits is 25920, while the sum is 35.

The square root of 1256461163 is about 35446.5959296517. The cubic root of 1256461163 is about 1079.0701767813.

The spelling of 1256461163 in words is "one billion, two hundred fifty-six million, four hundred sixty-one thousand, one hundred sixty-three".