18273820100 has 18 divisors (see below), whose sum is σ = 39654189834. Its totient is φ = 7309528000.

The previous prime is 18273820093. The next prime is 18273820121. The reversal of 18273820100 is 102837281.

It can be written as a sum of positive squares in 3 ways, for example, as 2321119684 + 15952700416 = 48178^2 + 126304^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 91369001 + ... + 91369200.

Almost surely, 2^18273820100 is an apocalyptic number.

18273820100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18273820100 is an abundant number, since it is smaller than the sum of its proper divisors (21380369734).

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

18273820100 is a wasteful number, since it uses less digits than its factorization.

18273820100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182738215 (or 182738208 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The spelling of 18273820100 in words is "eighteen billion, two hundred seventy-three million, eight hundred twenty thousand, one hundred".