2191038 has 8 divisors (see below), whose sum is σ = 4382088. Its totient is φ = 730344.

The previous prime is 2191031. The next prime is 2191051. The reversal of 2191038 is 8301912.

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

2191038 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 2190999 and 2191017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2191031) 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, 182581 + ... + 182592.

It is an arithmetic number, because the mean of its divisors is an integer number (547761).

2^2191038 is an apocalyptic number.

2191038 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2191038 is a wasteful number, since it uses less digits than its factorization.

2191038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365178.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 2191038 is about 1480.2155248476. The cubic root of 2191038 is about 129.8822997796.

The spelling of 2191038 in words is "two million, one hundred ninety-one thousand, thirty-eight".