1189925916 has 24 divisors (see below), whose sum is σ = 2780638224. Its totient is φ = 396049920.

The previous prime is 1189925911. The next prime is 1189925927. The reversal of 1189925916 is 6195299811.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189925911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65595 + ... + 81746.

It is an arithmetic number, because the mean of its divisors is an integer number (115859926).

Almost surely, 2^1189925916 is an apocalyptic number.

It is an amenable number.

1189925916 is an abundant number, since it is smaller than the sum of its proper divisors (1590712308).

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

1189925916 is a wasteful number, since it uses less digits than its factorization.

1189925916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148021 (or 148019 counting only the distinct ones).

The product of its digits is 349920, while the sum is 51.

The square root of 1189925916 is about 34495.3028106726. The cubic root of 1189925916 is about 1059.6765109951.

The spelling of 1189925916 in words is "one billion, one hundred eighty-nine million, nine hundred twenty-five thousand, nine hundred sixteen".