1111788899 has 8 divisors (see below), whose sum is σ = 1267741440. Its totient is φ = 965897856.

The previous prime is 1111788893. The next prime is 1111788919. The reversal of 1111788899 is 9988871111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111788899 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1111788899.

It is not an unprimeable number, because it can be changed into a prime (1111788893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2515139 + ... + 2515580.

It is an arithmetic number, because the mean of its divisors is an integer number (158467680).

Almost surely, 2^1111788899 is an apocalyptic number.

1111788899 is a deficient number, since it is larger than the sum of its proper divisors (155952541).

1111788899 is a wasteful number, since it uses less digits than its factorization.

1111788899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5030749.

The product of its digits is 290304, while the sum is 53.

The square root of 1111788899 is about 33343.4986016765. The cubic root of 1111788899 is about 1035.9547302983.

The spelling of 1111788899 in words is "one billion, one hundred eleven million, seven hundred eighty-eight thousand, eight hundred ninety-nine".