1191008112 has 60 divisors (see below), whose sum is σ = 3579107976. Its totient is φ = 340287360.

The previous prime is 1191008099. The next prime is 1191008167. The reversal of 1191008112 is 2118001911.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250839 + ... + 255542.

Almost surely, 2^1191008112 is an apocalyptic number.

1191008112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1191008112 is an abundant number, since it is smaller than the sum of its proper divisors (2388099864).

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

1191008112 is a wasteful number, since it uses less digits than its factorization.

1191008112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506406 (or 506393 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 24.

The square root of 1191008112 is about 34510.9853814695. The cubic root of 1191008112 is about 1059.9976598975.

The spelling of 1191008112 in words is "one billion, one hundred ninety-one million, eight thousand, one hundred twelve".