2256618478 has 8 divisors (see below), whose sum is σ = 3392239968. Its totient is φ = 1125871824.

The previous prime is 2256618461. The next prime is 2256618509. The reversal of 2256618478 is 8748166522.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1217551 + ... + 1219402.

It is an arithmetic number, because the mean of its divisors is an integer number (424029996).

Almost surely, 2^2256618478 is an apocalyptic number.

2256618478 is a deficient number, since it is larger than the sum of its proper divisors (1135621490).

2256618478 is a wasteful number, since it uses less digits than its factorization.

2256618478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2437418.

The product of its digits is 1290240, while the sum is 49.

The square root of 2256618478 is about 47503.8785574399. The cubic root of 2256618478 is about 1311.6542778193.

The spelling of 2256618478 in words is "two billion, two hundred fifty-six million, six hundred eighteen thousand, four hundred seventy-eight".