1113556899 has 96 divisors (see below), whose sum is σ = 1991195136. Its totient is φ = 546739200.

The previous prime is 1113556889. The next prime is 1113556901. The reversal of 1113556899 is 9986553111.

1113556899 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 33370²-1.

It is not a de Polignac number, because 1113556899 - 2⁵ = 1113556867 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1113556849) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4905424 + ... + 4905650.

It is an arithmetic number, because the mean of its divisors is an integer number (20741616).

Almost surely, 2^1113556899 is an apocalyptic number.

1113556899 is a deficient number, since it is larger than the sum of its proper divisors (877638237).

1113556899 is a wasteful number, since it uses less digits than its factorization.

1113556899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425 (or 418 counting only the distinct ones).

The product of its digits is 291600, while the sum is 48.

The square root of 1113556899 is about 33369.9999850165. Note that the first 4 decimals coincide. The cubic root of 1113556899 is about 1036.5035748827.

The spelling of 1113556899 in words is "one billion, one hundred thirteen million, five hundred fifty-six thousand, eight hundred ninety-nine".