18661848 has 32 divisors (see below), whose sum is σ = 48265200. Its totient is φ = 6005888.

The previous prime is 18661843. The next prime is 18661859. The reversal of 18661848 is 84816681.

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 (18661843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12711 + ... + 14102.

Almost surely, 2^18661848 is an apocalyptic number.

It is an amenable number.

18661848 is an abundant number, since it is smaller than the sum of its proper divisors (29603352).

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

18661848 is a wasteful number, since it uses less digits than its factorization.

18661848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26851 (or 26847 counting only the distinct ones).

The product of its digits is 73728, while the sum is 42.

The square root of 18661848 is about 4319.9361106387. The cubic root of 18661848 is about 265.2476526688.

The spelling of 18661848 in words is "eighteen million, six hundred sixty-one thousand, eight hundred forty-eight".