1113120549 has 12 divisors (see below), whose sum is σ = 1667390816. Its totient is φ = 742080204.

The previous prime is 1113120527. The next prime is 1113120551. The reversal of 1113120549 is 9450213111.

It is a happy number.

1113120549 is a `hidden beast` number, since 1 + 113 + 1 + 2 + 0 + 549 = 666.

It is not a de Polignac number, because 1113120549 - 2⁵ = 1113120517 is a prime.

It is a super-2 number, since 2×1113120549² = 2478074713212122802, which contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113120559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2290129 + ... + 2290614.

Almost surely, 2^1113120549 is an apocalyptic number.

It is an amenable number.

1113120549 is a deficient number, since it is larger than the sum of its proper divisors (554270267).

1113120549 is an frugal number, since it uses more digits than its factorization.

1113120549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4580758 (or 4580746 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1113120549 is about 33363.4612862635. The cubic root of 1113120549 is about 1036.3681717064.

The spelling of 1113120549 in words is "one billion, one hundred thirteen million, one hundred twenty thousand, five hundred forty-nine".