1120162891 has 4 divisors (see below), whose sum is σ = 1143996192. Its totient is φ = 1096329592.

The previous prime is 1120162837. The next prime is 1120162907. The reversal of 1120162891 is 1982610211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1982610211 = 911 ⋅2176301.

It is a cyclic number.

It is not a de Polignac number, because 1120162891 - 2¹³ = 1120154699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1120162831) 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, 11916580 + ... + 11916673.

It is an arithmetic number, because the mean of its divisors is an integer number (285999048).

Almost surely, 2^1120162891 is an apocalyptic number.

1120162891 is a deficient number, since it is larger than the sum of its proper divisors (23833301).

1120162891 is an equidigital number, since it uses as much as digits as its factorization.

1120162891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23833300.

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

The square root of 1120162891 is about 33468.8346226755. The cubic root of 1120162891 is about 1038.5491637962.

The spelling of 1120162891 in words is "one billion, one hundred twenty million, one hundred sixty-two thousand, eight hundred ninety-one".