1818464256 has 416 divisors, whose sum is σ = 6447955200. Its totient is φ = 501645312.

The previous prime is 1818464231. The next prime is 1818464261. The reversal of 1818464256 is 6524648181.

It is a happy number.

1818464256 is a `hidden beast` number, since 181 + 8 + 46 + 425 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62705650 + ... + 62705678.

Almost surely, 2^1818464256 is an apocalyptic number.

1818464256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1818464256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3223977600).

1818464256 is an abundant number, since it is smaller than the sum of its proper divisors (4629490944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1818464256 is an frugal number, since it uses more digits than its factorization.

1818464256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 41 counting only the distinct ones).

The product of its digits is 368640, while the sum is 45.

The square root of 1818464256 is about 42643.4550194986. The cubic root of 1818464256 is about 1220.5856401758.

The spelling of 1818464256 in words is "one billion, eight hundred eighteen million, four hundred sixty-four thousand, two hundred fifty-six".