256918453 has 24 divisors (see below), whose sum is σ = 294366240. Its totient is φ = 223792800.

The previous prime is 256918451. The next prime is 256918477. The reversal of 256918453 is 354819652.

256918453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 256918453 - 2¹ = 256918451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256918451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 740226 + ... + 740572.

It is an arithmetic number, because the mean of its divisors is an integer number (12265260).

Almost surely, 2^256918453 is an apocalyptic number.

It is an amenable number.

256918453 is a deficient number, since it is larger than the sum of its proper divisors (37447787).

256918453 is a wasteful number, since it uses less digits than its factorization.

256918453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609 (or 598 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The square root of 256918453 is about 16028.6759590429. The cubic root of 256918453 is about 635.7188651392.

The spelling of 256918453 in words is "two hundred fifty-six million, nine hundred eighteen thousand, four hundred fifty-three".