2291194 has 8 divisors (see below), whose sum is σ = 3443220. Its totient is φ = 1143456.

The previous prime is 2291189. The next prime is 2291197. The reversal of 2291194 is 4911922.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2289169 + 2025 = 1513^2 + 45^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2291197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1512 + ... + 2620.

2^2291194 is an apocalyptic number.

2291194 is a deficient number, since it is larger than the sum of its proper divisors (1152026).

2291194 is a wasteful number, since it uses less digits than its factorization.

2291194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2144.

The product of its digits is 1296, while the sum is 28.

The square root of 2291194 is about 1513.6690523361. The cubic root of 2291194 is about 131.8319333328.

It can be divided in two parts, 22911 and 94, that added together give a triangular number (23005 = T₂₁₄).

The spelling of 2291194 in words is "two million, two hundred ninety-one thousand, one hundred ninety-four".