2183619940 has 12 divisors (see below), whose sum is σ = 4585601916. Its totient is φ = 873447968.

The previous prime is 2183619929. The next prime is 2183620001. The reversal of 2183619940 is 499163812.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1252027456 + 931592484 = 35384^2 + 30522^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54590479 + ... + 54590518.

It is an arithmetic number, because the mean of its divisors is an integer number (382133493).

Almost surely, 2^2183619940 is an apocalyptic number.

2183619940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2183619940 is an abundant number, since it is smaller than the sum of its proper divisors (2401981976).

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

2183619940 is a wasteful number, since it uses less digits than its factorization.

2183619940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109181006 (or 109181004 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 2183619940 is about 46729.2193386536. The cubic root of 2183619940 is about 1297.3555592766.

The spelling of 2183619940 in words is "two billion, one hundred eighty-three million, six hundred nineteen thousand, nine hundred forty".