18900801 has 24 divisors (see below), whose sum is σ = 29034720. Its totient is φ = 11814336.

The previous prime is 18900797. The next prime is 18900823. The reversal of 18900801 is 10800981.

It is not a de Polignac number, because 18900801 - 2² = 18900797 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18900851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17781 + ... + 18813.

It is an arithmetic number, because the mean of its divisors is an integer number (1209780).

Almost surely, 2^18900801 is an apocalyptic number.

It is an amenable number.

18900801 is a deficient number, since it is larger than the sum of its proper divisors (10133919).

18900801 is a wasteful number, since it uses less digits than its factorization.

18900801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165 (or 1162 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 18900801 is about 4347.5051466330. The cubic root of 18900801 is about 266.3749634913.

It can be divided in two parts, 18900 and 801, that added together give a triangular number (19701 = T₁₉₈).

The spelling of 18900801 in words is "eighteen million, nine hundred thousand, eight hundred one".