256146413 has 4 divisors (see below), whose sum is σ = 257051808. Its totient is φ = 255241020.

The previous prime is 256146379. The next prime is 256146431. The reversal of 256146413 is 314641652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 256146413 - 2¹² = 256142317 is a prime.

It is a super-2 number, since 2×256146413² = 131221969785533138, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 256146413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256146113) 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, 452273 + ... + 452838.

It is an arithmetic number, because the mean of its divisors is an integer number (64262952).

Almost surely, 2^256146413 is an apocalyptic number.

It is an amenable number.

256146413 is a deficient number, since it is larger than the sum of its proper divisors (905395).

256146413 is an equidigital number, since it uses as much as digits as its factorization.

256146413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905394.

The product of its digits is 17280, while the sum is 32.

The square root of 256146413 is about 16004.5747522388. The cubic root of 256146413 is about 635.0814477956.

The spelling of 256146413 in words is "two hundred fifty-six million, one hundred forty-six thousand, four hundred thirteen".