1918104418 has 8 divisors (see below), whose sum is σ = 2877550812. Its totient is φ = 958920816.

The previous prime is 1918104413. The next prime is 1918104431. The reversal of 1918104418 is 8144018191.

It can be written as a sum of positive squares in 2 ways, for example, as 1903838689 + 14265729 = 43633^2 + 3777^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1918104418² = 7358249116702237448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1918104413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46305 + ... + 77332.

Almost surely, 2^1918104418 is an apocalyptic number.

1918104418 is a deficient number, since it is larger than the sum of its proper divisors (959446394).

1918104418 is a wasteful number, since it uses less digits than its factorization.

1918104418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131396.

The product of its (nonzero) digits is 9216, while the sum is 37.

The square root of 1918104418 is about 43796.1689877094. The cubic root of 1918104418 is about 1242.4838389482.

The spelling of 1918104418 in words is "one billion, nine hundred eighteen million, one hundred four thousand, four hundred eighteen".