1112820691 has 4 divisors (see below), whose sum is σ = 1117680400. Its totient is φ = 1107960984.

The previous prime is 1112820679. The next prime is 1112820719. The reversal of 1112820691 is 1960282111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1112820691 - 2⁵ = 1112820659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1112820641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2429511 + ... + 2429968.

It is an arithmetic number, because the mean of its divisors is an integer number (279420100).

Almost surely, 2^1112820691 is an apocalyptic number.

1112820691 is a deficient number, since it is larger than the sum of its proper divisors (4859709).

1112820691 is an equidigital number, since it uses as much as digits as its factorization.

1112820691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4859708.

The product of its (nonzero) digits is 1728, while the sum is 31.

The square root of 1112820691 is about 33358.9671752589. The cubic root of 1112820691 is about 1036.2751026623.

The spelling of 1112820691 in words is "one billion, one hundred twelve million, eight hundred twenty thousand, six hundred ninety-one".