18250801 has 4 divisors (see below), whose sum is σ = 18431604. Its totient is φ = 18070000.

The previous prime is 18250769. The next prime is 18250819. The reversal of 18250801 is 10805281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10805281 = 19 ⋅568699.

It can be written as a sum of positive squares in 2 ways, for example, as 8856576 + 9394225 = 2976^2 + 3065^2 .

It is a cyclic number.

It is not a de Polignac number, because 18250801 - 2⁵ = 18250769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18250301) 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, 90250 + ... + 90451.

It is an arithmetic number, because the mean of its divisors is an integer number (4607901).

Almost surely, 2^18250801 is an apocalyptic number.

It is an amenable number.

18250801 is a deficient number, since it is larger than the sum of its proper divisors (180803).

18250801 is a wasteful number, since it uses less digits than its factorization.

18250801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180802.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 18250801 is about 4272.0956215890. The cubic root of 18250801 is about 263.2857232021.

The spelling of 18250801 in words is "eighteen million, two hundred fifty thousand, eight hundred one".