1189881372 has 48 divisors (see below), whose sum is σ = 2898238112. Its totient is φ = 379572480.

The previous prime is 1189881367. The next prime is 1189881383. The reversal of 1189881372 is 2731889811.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5118 + ... + 49050.

Almost surely, 2^1189881372 is an apocalyptic number.

1189881372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1189881372 is an abundant number, since it is smaller than the sum of its proper divisors (1708356740).

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

1189881372 is a wasteful number, since it uses less digits than its factorization.

1189881372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44038 (or 44036 counting only the distinct ones).

The product of its digits is 193536, while the sum is 48.

The square root of 1189881372 is about 34494.6571515068. The cubic root of 1189881372 is about 1059.6632880936.

The spelling of 1189881372 in words is "one billion, one hundred eighty-nine million, eight hundred eighty-one thousand, three hundred seventy-two".