1814281664 has 28 divisors (see below), whose sum is σ = 3877156584. Its totient is φ = 837360384.

The previous prime is 1814281661. The next prime is 1814281681. The reversal of 1814281664 is 4661824181.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1814281661) 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, 1089482 + ... + 1091145.

It is an arithmetic number, because the mean of its divisors is an integer number (138469878).

Almost surely, 2^1814281664 is an apocalyptic number.

It is an amenable number.

1814281664 is an abundant number, since it is smaller than the sum of its proper divisors (2062874920).

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

1814281664 is a wasteful number, since it uses less digits than its factorization.

1814281664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2180652 (or 2180642 counting only the distinct ones).

The product of its digits is 73728, while the sum is 41.

The square root of 1814281664 is about 42594.3853576971. The cubic root of 1814281664 is about 1219.6491116668.

The spelling of 1814281664 in words is "one billion, eight hundred fourteen million, two hundred eighty-one thousand, six hundred sixty-four".