2193492818 has 16 divisors (see below), whose sum is σ = 3591221184. Its totient is φ = 996522960.

The previous prime is 2193492817. The next prime is 2193492827. The reversal of 2193492818 is 8182943912.

It is a super-2 number, since 2×2193492818² = 9622821485235162248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2193492817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18971 + ... + 68897.

It is an arithmetic number, because the mean of its divisors is an integer number (224451324).

Almost surely, 2^2193492818 is an apocalyptic number.

2193492818 is a deficient number, since it is larger than the sum of its proper divisors (1397728366).

2193492818 is a wasteful number, since it uses less digits than its factorization.

2193492818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51937.

The product of its digits is 248832, while the sum is 47.

The square root of 2193492818 is about 46834.7394355942. The cubic root of 2193492818 is about 1299.3078797066.

The spelling of 2193492818 in words is "two billion, one hundred ninety-three million, four hundred ninety-two thousand, eight hundred eighteen".