1840838836 has 12 divisors (see below), whose sum is σ = 3221922340. Its totient is φ = 920289600.

The previous prime is 1840838819. The next prime is 1840838843. The reversal of 1840838836 is 6388380481.

It can be written as a sum of positive squares in 2 ways, for example, as 938196900 + 902641936 = 30630^2 + 30044^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1840838836.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4000 + ... + 60808.

Almost surely, 2^1840838836 is an apocalyptic number.

It is an amenable number.

1840838836 is a deficient number, since it is larger than the sum of its proper divisors (1381083504).

1840838836 is a wasteful number, since it uses less digits than its factorization.

1840838836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64914 (or 64912 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 49.

The square root of 1840838836 is about 42904.9977974594. The cubic root of 1840838836 is about 1225.5713200099.

The spelling of 1840838836 in words is "one billion, eight hundred forty million, eight hundred thirty-eight thousand, eight hundred thirty-six".