18706001 has 4 divisors (see below), whose sum is σ = 19806372. Its totient is φ = 17605632.

The previous prime is 18705983. The next prime is 18706003. The reversal of 18706001 is 10060781.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 14899600 + 3806401 = 3860^2 + 1951^2 .

It is a cyclic number.

It is not a de Polignac number, because 18706001 - 2¹⁴ = 18689617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18706003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550160 + ... + 550193.

It is an arithmetic number, because the mean of its divisors is an integer number (4951593).

Almost surely, 2^18706001 is an apocalyptic number.

It is an amenable number.

18706001 is a deficient number, since it is larger than the sum of its proper divisors (1100371).

18706001 is a wasteful number, since it uses less digits than its factorization.

18706001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100370.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 18706001 is about 4325.0434679897. The cubic root of 18706001 is about 265.4566754742.

Adding to 18706001 its reverse (10060781), we get a palindrome (28766782).

The spelling of 18706001 in words is "eighteen million, seven hundred six thousand, one".