2196749418 has 16 divisors (see below), whose sum is σ = 4651940160. Its totient is φ = 689176256.

The previous prime is 2196749413. The next prime is 2196749431. The reversal of 2196749418 is 8149476912.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (2196749413) 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, 10768278 + ... + 10768481.

It is an arithmetic number, because the mean of its divisors is an integer number (290746260).

Almost surely, 2^2196749418 is an apocalyptic number.

2196749418 is an abundant number, since it is smaller than the sum of its proper divisors (2455190742).

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

2196749418 is a wasteful number, since it uses less digits than its factorization.

2196749418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21536781.

The product of its digits is 870912, while the sum is 51.

The square root of 2196749418 is about 46869.4934685665. The cubic root of 2196749418 is about 1299.9505736632.

The spelling of 2196749418 in words is "two billion, one hundred ninety-six million, seven hundred forty-nine thousand, four hundred eighteen".