18121848 has 16 divisors (see below), whose sum is σ = 45304680. Its totient is φ = 6040608.

The previous prime is 18121843. The next prime is 18121867. The reversal of 18121848 is 84812181.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18121843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377515 + ... + 377562.

Almost surely, 2^18121848 is an apocalyptic number.

It is an amenable number.

18121848 is an abundant number, since it is smaller than the sum of its proper divisors (27182832).

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

18121848 is a wasteful number, since it uses less digits than its factorization.

18121848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755086 (or 755082 counting only the distinct ones).

The product of its digits is 4096, while the sum is 33.

The square root of 18121848 is about 4256.9763917598. The cubic root of 18121848 is about 262.6641657911.

The spelling of 18121848 in words is "eighteen million, one hundred twenty-one thousand, eight hundred forty-eight".