18285001 has 4 divisors (see below), whose sum is σ = 20897152. Its totient is φ = 15672852.

The previous prime is 18284989. The next prime is 18285031. The reversal of 18285001 is 10058281.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10058281 = 379 ⋅26539.

It is a cyclic number.

It is not a de Polignac number, because 18285001 - 2⁹ = 18284489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18285031) 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, 1306065 + ... + 1306078.

It is an arithmetic number, because the mean of its divisors is an integer number (5224288).

Almost surely, 2^18285001 is an apocalyptic number.

It is an amenable number.

18285001 is a deficient number, since it is larger than the sum of its proper divisors (2612151).

18285001 is an equidigital number, since it uses as much as digits as its factorization.

18285001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2612150.

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

The square root of 18285001 is about 4276.0964675741. The cubic root of 18285001 is about 263.4500767772.

The spelling of 18285001 in words is "eighteen million, two hundred eighty-five thousand, one".