1112640921 has 16 divisors (see below), whose sum is σ = 1883836800. Its totient is φ = 635794704.

The previous prime is 1112640911. The next prime is 1112640923. The reversal of 1112640921 is 1290462111.

1112640921 is a `hidden beast` number, since 1 + 1 + 12 + 640 + 9 + 2 + 1 = 666.

It is not a de Polignac number, because 1112640921 - 2⁵ = 1112640889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1112640923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2943306 + ... + 2943683.

It is an arithmetic number, because the mean of its divisors is an integer number (117739800).

Almost surely, 2^1112640921 is an apocalyptic number.

It is an amenable number.

1112640921 is a deficient number, since it is larger than the sum of its proper divisors (771195879).

1112640921 is an equidigital number, since it uses as much as digits as its factorization.

1112640921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5887005 (or 5886999 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1112640921 is about 33356.2725885252. The cubic root of 1112640921 is about 1036.2192981621.

The spelling of 1112640921 in words is "one billion, one hundred twelve million, six hundred forty thousand, nine hundred twenty-one".