1813884328 has 32 divisors (see below), whose sum is σ = 3568795200. Its totient is φ = 862647808.

The previous prime is 1813884323. The next prime is 1813884341. The reversal of 1813884328 is 8234883181.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (1813884323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5400 + ... + 60472.

It is an arithmetic number, because the mean of its divisors is an integer number (111524850).

Almost surely, 2^1813884328 is an apocalyptic number.

It is an amenable number.

1813884328 is a deficient number, since it is larger than the sum of its proper divisors (1754910872).

1813884328 is a wasteful number, since it uses less digits than its factorization.

1813884328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55281 (or 55277 counting only the distinct ones).

The product of its digits is 294912, while the sum is 46.

The square root of 1813884328 is about 42589.7209194895. The cubic root of 1813884328 is about 1219.5600689177.

The spelling of 1813884328 in words is "one billion, eight hundred thirteen million, eight hundred eighty-four thousand, three hundred twenty-eight".