2183938740 has 48 divisors (see below), whose sum is σ = 6794477760. Its totient is φ = 582383520.

The previous prime is 2183938733. The next prime is 2183938751. The reversal of 2183938740 is 478393812.

2183938740 is a `hidden beast` number, since 218 + 393 + 8 + 7 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2021626 + ... + 2022705.

It is an arithmetic number, because the mean of its divisors is an integer number (141551620).

Almost surely, 2^2183938740 is an apocalyptic number.

2183938740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2183938740 is an abundant number, since it is smaller than the sum of its proper divisors (4610539020).

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

2183938740 is a wasteful number, since it uses less digits than its factorization.

2183938740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4044349 (or 4044341 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 2183938740 is about 46732.6303561013. The cubic root of 2183938740 is about 1297.4186924893.

The spelling of 2183938740 in words is "two billion, one hundred eighty-three million, nine hundred thirty-eight thousand, seven hundred forty".