2189001 has 16 divisors (see below), whose sum is σ = 3041280. Its totient is φ = 1399440.

The previous prime is 2188993. The next prime is 2189017. The reversal of 2189001 is 1009812.

It is not a de Polignac number, because 2189001 - 2³ = 2188993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2189021) 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, 9040 + ... + 9278.

It is an arithmetic number, because the mean of its divisors is an integer number (190080).

2^2189001 is an apocalyptic number.

It is an amenable number.

2189001 is a deficient number, since it is larger than the sum of its proper divisors (852279).

2189001 is a wasteful number, since it uses less digits than its factorization.

2189001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 2189001 is about 1479.5272893732. The cubic root of 2189001 is about 129.8420369336.

The spelling of 2189001 in words is "two million, one hundred eighty-nine thousand, one".