2194018 has 4 divisors (see below), whose sum is σ = 3291030. Its totient is φ = 1097008.

The previous prime is 2194013. The next prime is 2194019. The reversal of 2194018 is 8104912.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 1979649 + 214369 = 1407^2 + 463^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2193983 and 2194001.

It is not an unprimeable number, because it can be changed into a prime (2194013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 548503 + ... + 548506.

2^2194018 is an apocalyptic number.

2194018 is a deficient number, since it is larger than the sum of its proper divisors (1097012).

2194018 is a wasteful number, since it uses less digits than its factorization.

2194018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097011.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 2194018 is about 1481.2217929804. The cubic root of 2194018 is about 129.9411568012.

The spelling of 2194018 in words is "two million, one hundred ninety-four thousand, eighteen".