1816227456 has 32 divisors (see below), whose sum is σ = 4824355200. Its totient is φ = 605409024.

The previous prime is 1816227451. The next prime is 1816227493. The reversal of 1816227456 is 6547226181.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (1816227451) 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, 2364496 + ... + 2365263.

It is an arithmetic number, because the mean of its divisors is an integer number (150761100).

Almost surely, 2^1816227456 is an apocalyptic number.

1816227456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1816227456 is an abundant number, since it is smaller than the sum of its proper divisors (3008127744).

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

1816227456 is an equidigital number, since it uses as much as digits as its factorization.

1816227456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4729776 (or 4729764 counting only the distinct ones).

The product of its digits is 161280, while the sum is 42.

The square root of 1816227456 is about 42617.2201815182. The cubic root of 1816227456 is about 1220.0849748212.

The spelling of 1816227456 in words is "one billion, eight hundred sixteen million, two hundred twenty-seven thousand, four hundred fifty-six".