1121844461 has 4 divisors (see below), whose sum is σ = 1158033024. Its totient is φ = 1085655900.

The previous prime is 1121844443. The next prime is 1121844469. The reversal of 1121844461 is 1644481211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1121844461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121844469) 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, 18094235 + ... + 18094296.

It is an arithmetic number, because the mean of its divisors is an integer number (289508256).

Almost surely, 2^1121844461 is an apocalyptic number.

It is an amenable number.

1121844461 is a deficient number, since it is larger than the sum of its proper divisors (36188563).

1121844461 is an equidigital number, since it uses as much as digits as its factorization.

1121844461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36188562.

The product of its digits is 6144, while the sum is 32.

The square root of 1121844461 is about 33493.9466321901. The cubic root of 1121844461 is about 1039.0685882400.

The spelling of 1121844461 in words is "one billion, one hundred twenty-one million, eight hundred forty-four thousand, four hundred sixty-one".