18850801 has 4 divisors (see below), whose sum is σ = 18859492. Its totient is φ = 18842112.

The previous prime is 18850771. The next prime is 18850817. The reversal of 18850801 is 10805881.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 7017201 + 11833600 = 2649^2 + 3440^2 .

It is a cyclic number.

It is not a de Polignac number, because 18850801 - 2¹⁹ = 18326513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18800801) 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, 1921 + ... + 6433.

It is an arithmetic number, because the mean of its divisors is an integer number (4714873).

Almost surely, 2^18850801 is an apocalyptic number.

It is an amenable number.

18850801 is a deficient number, since it is larger than the sum of its proper divisors (8691).

18850801 is an equidigital number, since it uses as much as digits as its factorization.

18850801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8690.

The product of its (nonzero) digits is 2560, while the sum is 31.

The square root of 18850801 is about 4341.7509140898. The cubic root of 18850801 is about 266.1398674603.

The spelling of 18850801 in words is "eighteen million, eight hundred fifty thousand, eight hundred one".