18875838 has 16 divisors (see below), whose sum is σ = 38969856. Its totient is φ = 6088920.

The previous prime is 18875833. The next prime is 18875851. The reversal of 18875838 is 83857881.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18875833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50556 + ... + 50927.

It is an arithmetic number, because the mean of its divisors is an integer number (2435616).

Almost surely, 2^18875838 is an apocalyptic number.

18875838 is an abundant number, since it is smaller than the sum of its proper divisors (20094018).

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

18875838 is a wasteful number, since it uses less digits than its factorization.

18875838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101519.

The product of its digits is 430080, while the sum is 48.

The square root of 18875838 is about 4344.6332411379. The cubic root of 18875838 is about 266.2576413421.

The spelling of 18875838 in words is "eighteen million, eight hundred seventy-five thousand, eight hundred thirty-eight".