1103618618 has 4 divisors (see below), whose sum is σ = 1655427930. Its totient is φ = 551809308.

The previous prime is 1103618611. The next prime is 1103618623. The reversal of 1103618618 is 8168163011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8168163011 = 4831 ⋅1690781.

It can be written as a sum of positive squares in only one way, i.e., 935319889 + 168298729 = 30583^2 + 12973^2 .

It is not an unprimeable number, because it can be changed into a prime (1103618611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275904653 + ... + 275904656.

Almost surely, 2^1103618618 is an apocalyptic number.

1103618618 is a deficient number, since it is larger than the sum of its proper divisors (551809312).

1103618618 is an equidigital number, since it uses as much as digits as its factorization.

1103618618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551809311.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 1103618618 is about 33220.7558312571. The cubic root of 1103618618 is about 1033.4108241806.

The spelling of 1103618618 in words is "one billion, one hundred three million, six hundred eighteen thousand, six hundred eighteen".