1113557999 has 4 divisors (see below), whose sum is σ = 1115772336. Its totient is φ = 1111343664.

The previous prime is 1113557983. The next prime is 1113558001. The reversal of 1113557999 is 9997553111.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1113557999 - 2⁴ = 1113557983 is a prime.

It is a super-2 number, since 2×1113557999² = 2480022834273768002, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113557959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1106414 + ... + 1107419.

It is an arithmetic number, because the mean of its divisors is an integer number (278943084).

Almost surely, 2^1113557999 is an apocalyptic number.

1113557999 is a deficient number, since it is larger than the sum of its proper divisors (2214337).

1113557999 is an equidigital number, since it uses as much as digits as its factorization.

1113557999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2214336.

The product of its digits is 382725, while the sum is 50.

The square root of 1113557999 is about 33370.0164668824. The cubic root of 1113557999 is about 1036.5039161775.

The spelling of 1113557999 in words is "one billion, one hundred thirteen million, five hundred fifty-seven thousand, nine hundred ninety-nine".