1840994233 has 6 divisors (see below), whose sum is σ = 1993502814. Its totient is φ = 1699379136.

The previous prime is 1840994231. The next prime is 1840994249. The reversal of 1840994233 is 3324990481.

It can be written as a sum of positive squares in 3 ways, for example, as 75986089 + 1765008144 = 8717^2 + 42012^2 .

It is not a de Polignac number, because 1840994233 - 2¹ = 1840994231 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1840994233.

It is not an unprimeable number, because it can be changed into a prime (1840994231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5446560 + ... + 5446897.

It is an arithmetic number, because the mean of its divisors is an integer number (332250469).

Almost surely, 2^1840994233 is an apocalyptic number.

1840994233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1840994233 is a deficient number, since it is larger than the sum of its proper divisors (152508581).

1840994233 is a wasteful number, since it uses less digits than its factorization.

1840994233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10893483 (or 10893470 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 1840994233 is about 42906.8087021163. The cubic root of 1840994233 is about 1225.6058051485.

The spelling of 1840994233 in words is "one billion, eight hundred forty million, nine hundred ninety-four thousand, two hundred thirty-three".