1983191228 has 12 divisors (see below), whose sum is σ = 3478831272. Its totient is φ = 989239440.

The previous prime is 1983191227. The next prime is 1983191237. The reversal of 1983191228 is 8221913891.

It is a happy number.

It is a super-2 number, since 2×1983191228² = 7866094893632295968, which contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1983191227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 587150 + ... + 590517.

It is an arithmetic number, because the mean of its divisors is an integer number (289902606).

Almost surely, 2^1983191228 is an apocalyptic number.

It is an amenable number.

1983191228 is a deficient number, since it is larger than the sum of its proper divisors (1495640044).

1983191228 is a wasteful number, since it uses less digits than its factorization.

1983191228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178092 (or 1178090 counting only the distinct ones).

The product of its digits is 62208, while the sum is 44.

The square root of 1983191228 is about 44533.0352435133. The cubic root of 1983191228 is about 1256.3814944228.

The spelling of 1983191228 in words is "one billion, nine hundred eighty-three million, one hundred ninety-one thousand, two hundred twenty-eight".