1849874440 has 16 divisors (see below), whose sum is σ = 4162217580. Its totient is φ = 739949760.

The previous prime is 1849874437. The next prime is 1849874461. The reversal of 1849874440 is 444789481.

It can be written as a sum of positive squares in 2 ways, for example, as 1762152484 + 87721956 = 41978^2 + 9366^2 .

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, 23123391 + ... + 23123470.

Almost surely, 2^1849874440 is an apocalyptic number.

1849874440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1849874440 is an abundant number, since it is smaller than the sum of its proper divisors (2312343140).

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

1849874440 is a wasteful number, since it uses less digits than its factorization.

1849874440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46246872 (or 46246868 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 49.

The square root of 1849874440 is about 43010.1667050943. The cubic root of 1849874440 is about 1227.5732530260.

The spelling of 1849874440 in words is "one billion, eight hundred forty-nine million, eight hundred seventy-four thousand, four hundred forty".