1112257991 has 8 divisors (see below), whose sum is σ = 1198473024. Its totient is φ = 1026136800.

The previous prime is 1112257981. The next prime is 1112258023. The reversal of 1112257991 is 1997522111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1112257991 - 2²² = 1108063687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112257921) 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, 2210 + ... + 47216.

It is an arithmetic number, because the mean of its divisors is an integer number (149809128).

Almost surely, 2^1112257991 is an apocalyptic number.

1112257991 is a deficient number, since it is larger than the sum of its proper divisors (86215033).

1112257991 is a wasteful number, since it uses less digits than its factorization.

1112257991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46921.

The product of its digits is 11340, while the sum is 38.

The square root of 1112257991 is about 33350.5320947058. The cubic root of 1112257991 is about 1036.1004083573.

The spelling of 1112257991 in words is "one billion, one hundred twelve million, two hundred fifty-seven thousand, nine hundred ninety-one".