189110001 has 16 divisors (see below), whose sum is σ = 258596096. Its totient is φ = 122862096.

The previous prime is 189109969. The next prime is 189110003. The reversal of 189110001 is 100011981.

It is not a de Polignac number, because 189110001 - 2⁵ = 189109969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 189110001.

It is not an unprimeable number, because it can be changed into a prime (189110003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66066 + ... + 68868.

It is an arithmetic number, because the mean of its divisors is an integer number (16162256).

Almost surely, 2^189110001 is an apocalyptic number.

It is an amenable number.

189110001 is a deficient number, since it is larger than the sum of its proper divisors (69486095).

189110001 is a wasteful number, since it uses less digits than its factorization.

189110001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3372.

The product of its (nonzero) digits is 72, while the sum is 21.

The square root of 189110001 is about 13751.7272006101. The cubic root of 189110001 is about 573.9906688702.

Adding to 189110001 its reverse (100011981), we get a palindrome (289121982).

The spelling of 189110001 in words is "one hundred eighty-nine million, one hundred ten thousand, one".