1918816422 has 32 divisors (see below), whose sum is σ = 4060590720. Its totient is φ = 602795520.

The previous prime is 1918816409. The next prime is 1918816439. The reversal of 1918816422 is 2246188191.

It is a super-2 number, since 2×1918816422² = 7363712922673764168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21604 + ... + 65607.

It is an arithmetic number, because the mean of its divisors is an integer number (126893460).

Almost surely, 2^1918816422 is an apocalyptic number.

1918816422 is an abundant number, since it is smaller than the sum of its proper divisors (2141774298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1918816422 is a wasteful number, since it uses less digits than its factorization.

1918816422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87428.

The product of its digits is 55296, while the sum is 42.

The square root of 1918816422 is about 43804.2968440312. The cubic root of 1918816422 is about 1242.6375573825.

The spelling of 1918816422 in words is "one billion, nine hundred eighteen million, eight hundred sixteen thousand, four hundred twenty-two".