1121933988 has 54 divisors (see below), whose sum is σ = 3299025366. Its totient is φ = 320552064.

The previous prime is 1121933987. The next prime is 1121933993. The reversal of 1121933988 is 8893391211.

It can be written as a sum of positive squares in only one way, i.e., 1117698624 + 4235364 = 33432^2 + 2058^2 .

It is not an unprimeable number, because it can be changed into a prime (1121933987) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 316245 + ... + 319772.

Almost surely, 2^1121933988 is an apocalyptic number.

1121933988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1121933988 is an abundant number, since it is smaller than the sum of its proper divisors (2177091378).

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

1121933988 is a wasteful number, since it uses less digits than its factorization.

1121933988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636041 (or 636029 counting only the distinct ones).

The product of its digits is 93312, while the sum is 45.

The square root of 1121933988 is about 33495.2830709042. The cubic root of 1121933988 is about 1039.0962279061.

The spelling of 1121933988 in words is "one billion, one hundred twenty-one million, nine hundred thirty-three thousand, nine hundred eighty-eight".