1813233850 has 12 divisors (see below), whose sum is σ = 3372615054. Its totient is φ = 725293520.

The previous prime is 1813233841. The next prime is 1813233913. The reversal of 1813233850 is 583323181.

It can be written as a sum of positive squares in 3 ways, for example, as 1719512089 + 93721761 = 41467^2 + 9681^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18132289 + ... + 18132388.

Almost surely, 2^1813233850 is an apocalyptic number.

1813233850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1813233850 is a deficient number, since it is larger than the sum of its proper divisors (1559381204).

1813233850 is a wasteful number, since it uses less digits than its factorization.

1813233850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36264689 (or 36264684 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 1813233850 is about 42582.0836737706. The cubic root of 1813233850 is about 1219.4142691315.

The spelling of 1813233850 in words is "one billion, eight hundred thirteen million, two hundred thirty-three thousand, eight hundred fifty".