1850561836 has 6 divisors (see below), whose sum is σ = 3238483220. Its totient is φ = 925280916.

The previous prime is 1850561813. The next prime is 1850561851. The reversal of 1850561836 is 6381650581.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 1850561792 and 1850561801.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 231320226 + ... + 231320233.

Almost surely, 2^1850561836 is an apocalyptic number.

It is an amenable number.

1850561836 is a deficient number, since it is larger than the sum of its proper divisors (1387921384).

1850561836 is a wasteful number, since it uses less digits than its factorization.

1850561836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462640463 (or 462640461 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 1850561836 is about 43018.1570502503. The cubic root of 1850561836 is about 1227.7252857672.

The spelling of 1850561836 in words is "one billion, eight hundred fifty million, five hundred sixty-one thousand, eight hundred thirty-six".