1813655284 has 48 divisors (see below), whose sum is σ = 3661967232. Its totient is φ = 769894272.

The previous prime is 1813655257. The next prime is 1813655293. The reversal of 1813655284 is 4825563181.

It is a super-2 number, since 2×1813655284² = 6578690978362241312, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1813655284.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1527339 + ... + 1528525.

It is an arithmetic number, because the mean of its divisors is an integer number (76290984).

Almost surely, 2^1813655284 is an apocalyptic number.

1813655284 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1813655284 is an abundant number, since it is smaller than the sum of its proper divisors (1848311948).

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

1813655284 is a wasteful number, since it uses less digits than its factorization.

1813655284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1672 (or 1670 counting only the distinct ones).

The product of its digits is 230400, while the sum is 43.

The square root of 1813655284 is about 42587.0318759126. The cubic root of 1813655284 is about 1219.5087343920.

The spelling of 1813655284 in words is "one billion, eight hundred thirteen million, six hundred fifty-five thousand, two hundred eighty-four".