1118811394 has 4 divisors (see below), whose sum is σ = 1678217094. Its totient is φ = 559405696.

The previous prime is 1118811389. The next prime is 1118811437. The reversal of 1118811394 is 4931188111.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1109889225 + 8922169 = 33315^2 + 2987^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 279702847 + ... + 279702850.

Almost surely, 2^1118811394 is an apocalyptic number.

1118811394 is a deficient number, since it is larger than the sum of its proper divisors (559405700).

1118811394 is an equidigital number, since it uses as much as digits as its factorization.

1118811394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559405699.

The product of its digits is 6912, while the sum is 37.

The square root of 1118811394 is about 33448.6381486601. The cubic root of 1118811394 is about 1038.1313195233.

The spelling of 1118811394 in words is "one billion, one hundred eighteen million, eight hundred eleven thousand, three hundred ninety-four".