1111678899 has 4 divisors (see below), whose sum is σ = 1482238536. Its totient is φ = 741119264.

The previous prime is 1111678891. The next prime is 1111678903. The reversal of 1111678899 is 9988761111.

It is a happy number.

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 1111678899 - 2³ = 1111678891 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1111678891) 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, 185279814 + ... + 185279819.

It is an arithmetic number, because the mean of its divisors is an integer number (370559634).

Almost surely, 2^1111678899 is an apocalyptic number.

1111678899 is a deficient number, since it is larger than the sum of its proper divisors (370559637).

1111678899 is an equidigital number, since it uses as much as digits as its factorization.

1111678899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370559636.

The product of its digits is 217728, while the sum is 51.

The square root of 1111678899 is about 33341.8490639017. The cubic root of 1111678899 is about 1035.9205635067.

The spelling of 1111678899 in words is "one billion, one hundred eleven million, six hundred seventy-eight thousand, eight hundred ninety-nine".