1118869013 has 4 divisors (see below), whose sum is σ = 1118948160. Its totient is φ = 1118789868.

The previous prime is 1118869009. The next prime is 1118869027. The reversal of 1118869013 is 3109688111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1118869013 - 2² = 1118869009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118869043) 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, 11933 + ... + 48786.

It is an arithmetic number, because the mean of its divisors is an integer number (279737040).

Almost surely, 2^1118869013 is an apocalyptic number.

It is an amenable number.

1118869013 is a deficient number, since it is larger than the sum of its proper divisors (79147).

1118869013 is an equidigital number, since it uses as much as digits as its factorization.

1118869013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79146.

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 1118869013 is about 33449.4994431905. The cubic root of 1118869013 is about 1038.1491405376.

The spelling of 1118869013 in words is "one billion, one hundred eighteen million, eight hundred sixty-nine thousand, thirteen".