1983278844 has 30 divisors (see below), whose sum is σ = 5184683504. Its totient is φ = 661092840.

The previous prime is 1983278831. The next prime is 1983278851. The reversal of 1983278844 is 4488723891.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3060292 + ... + 3060939.

Almost surely, 2^1983278844 is an apocalyptic number.

It is an amenable number.

1983278844 is an abundant number, since it is smaller than the sum of its proper divisors (3201404660).

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

1983278844 is a wasteful number, since it uses less digits than its factorization.

1983278844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6121247 (or 6121236 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The square root of 1983278844 is about 44534.0189518081. The cubic root of 1983278844 is about 1256.3999961686.

The spelling of 1983278844 in words is "one billion, nine hundred eighty-three million, two hundred seventy-eight thousand, eight hundred forty-four".