1115430818 has 4 divisors (see below), whose sum is σ = 1673146230. Its totient is φ = 557715408.

The previous prime is 1115430817. The next prime is 1115430887. The reversal of 1115430818 is 8180345111.

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., 1103369089 + 12061729 = 33217^2 + 3473^2 .

It is not an unprimeable number, because it can be changed into a prime (1115430817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278857703 + ... + 278857706.

Almost surely, 2^1115430818 is an apocalyptic number.

1115430818 is a deficient number, since it is larger than the sum of its proper divisors (557715412).

1115430818 is an equidigital number, since it uses as much as digits as its factorization.

1115430818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557715411.

The product of its (nonzero) digits is 3840, while the sum is 32.

The square root of 1115430818 is about 33398.0660817359. The cubic root of 1115430818 is about 1037.0846663482.

Adding to 1115430818 its reverse (8180345111), we get a palindrome (9295775929).

The spelling of 1115430818 in words is "one billion, one hundred fifteen million, four hundred thirty thousand, eight hundred eighteen".