19189001 has 8 divisors (see below), whose sum is σ = 20974464. Its totient is φ = 17447760.

The previous prime is 19188989. The next prime is 19189007. The reversal of 19189001 is 10098191.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19189001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19189007) 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, 10145 + ... + 11886.

It is an arithmetic number, because the mean of its divisors is an integer number (2621808).

Almost surely, 2^19189001 is an apocalyptic number.

It is an amenable number.

19189001 is a deficient number, since it is larger than the sum of its proper divisors (1785463).

19189001 is a wasteful number, since it uses less digits than its factorization.

19189001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22111.

The product of its (nonzero) digits is 648, while the sum is 29.

The square root of 19189001 is about 4380.5251968229. The cubic root of 19189001 is about 267.7220376753.

The spelling of 19189001 in words is "nineteen million, one hundred eighty-nine thousand, one".