2183978044 has 12 divisors (see below), whose sum is σ = 3824411584. Its totient is φ = 1091289024.

The previous prime is 2183977997. The next prime is 2183978053. The reversal of 2183978044 is 4408793812.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2183977985 and 2183978003.

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, 167949 + ... + 180484.

Almost surely, 2^2183978044 is an apocalyptic number.

It is an amenable number.

2183978044 is a deficient number, since it is larger than the sum of its proper divisors (1640433540).

2183978044 is a wasteful number, since it uses less digits than its factorization.

2183978044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350004 (or 350002 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 2183978044 is about 46733.0508740870. The cubic root of 2183978044 is about 1297.4264755889.

The spelling of 2183978044 in words is "two billion, one hundred eighty-three million, nine hundred seventy-eight thousand, forty-four".