2191382 has 4 divisors (see below), whose sum is σ = 3287076. Its totient is φ = 1095690.

The previous prime is 2191373. The next prime is 2191393. The reversal of 2191382 is 2831912.

It is a semiprime because it is the product of two primes.

It is a d-powerful number, because it can be written as 2⁴ + 1 + 9⁶ + 1 + 3¹³ + 8² + 2¹⁶ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 547844 + ... + 547847.

It is an arithmetic number, because the mean of its divisors is an integer number (821769).

2^2191382 is an apocalyptic number.

2191382 is a deficient number, since it is larger than the sum of its proper divisors (1095694).

2191382 is a wasteful number, since it uses less digits than its factorization.

2191382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095693.

The product of its digits is 864, while the sum is 26.

The square root of 2191382 is about 1480.3317195818. The cubic root of 2191382 is about 129.8890967366.

The spelling of 2191382 in words is "two million, one hundred ninety-one thousand, three hundred eighty-two".