1191102492 has 12 divisors (see below), whose sum is σ = 2779239176. Its totient is φ = 397034160.

The previous prime is 1191102487. The next prime is 1191102511. The reversal of 1191102492 is 2942011911.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1191102492² = 2837450292897220128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49629259 + ... + 49629282.

Almost surely, 2^1191102492 is an apocalyptic number.

1191102492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1191102492 is an abundant number, since it is smaller than the sum of its proper divisors (1588136684).

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

1191102492 is a wasteful number, since it uses less digits than its factorization.

1191102492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99258548 (or 99258546 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 1191102492 is about 34512.3527450680. The cubic root of 1191102492 is about 1060.0256585696.

The spelling of 1191102492 in words is "one billion, one hundred ninety-one million, one hundred two thousand, four hundred ninety-two".