185000001 has 8 divisors (see below), whose sum is σ = 261176544. Its totient is φ = 116078400.

The previous prime is 184999999. The next prime is 185000009. The reversal of 185000001 is 100000581.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 185000001 - 2¹ = 184999999 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (185000009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1813675 + ... + 1813776.

It is an arithmetic number, because the mean of its divisors is an integer number (32647068).

Almost surely, 2^185000001 is an apocalyptic number.

It is an amenable number.

185000001 is a deficient number, since it is larger than the sum of its proper divisors (76176543).

185000001 is a wasteful number, since it uses less digits than its factorization.

185000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3627471.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 185000001 is about 13601.4705454962. The cubic root of 185000001 is about 569.8019225572.

Adding to 185000001 its reverse (100000581), we get a palindrome (285000582).

The spelling of 185000001 in words is "one hundred eighty-five million, one", and thus it is an aban number.