1111812449 has 4 divisors (see below), whose sum is σ = 1212886320. Its totient is φ = 1010738580.

The previous prime is 1111812421. The next prime is 1111812451. The reversal of 1111812449 is 9442181111.

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 not a de Polignac number, because 1111812449 - 2⁸ = 1111812193 is a prime.

It is a super-2 number, since 2×1111812449² = 2472253843502755202, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1111812409) 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, 50536919 + ... + 50536940.

It is an arithmetic number, because the mean of its divisors is an integer number (303221580).

Almost surely, 2^1111812449 is an apocalyptic number.

It is an amenable number.

1111812449 is a deficient number, since it is larger than the sum of its proper divisors (101073871).

1111812449 is a wasteful number, since it uses less digits than its factorization.

1111812449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101073870.

The product of its digits is 2304, while the sum is 32.

The square root of 1111812449 is about 33343.8517421128. The cubic root of 1111812449 is about 1035.9620448049.

The spelling of 1111812449 in words is "one billion, one hundred eleven million, eight hundred twelve thousand, four hundred forty-nine".