2196386642 has 18 divisors (see below), whose sum is σ = 3407472549. Its totient is φ = 1061773560.

The previous prime is 2196386581. The next prime is 2196386651. The reversal of 2196386642 is 2466836912.

It can be written as a sum of positive squares in 2 ways, for example, as 2194079281 + 2307361 = 46841^2 + 1519^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=33139.

It is a super-2 number, since 2×2196386642² = 9648228562312072328, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2054084 + ... + 2055152.

Almost surely, 2^2196386642 is an apocalyptic number.

2196386642 is a deficient number, since it is larger than the sum of its proper divisors (1211085907).

2196386642 is an frugal number, since it uses more digits than its factorization.

2196386642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2202 (or 1102 counting only the distinct ones).

The product of its digits is 746496, while the sum is 47.

The square root of 2196386642 is about 46865.6232434820. The cubic root of 2196386642 is about 1299.8790108308.

The spelling of 2196386642 in words is "two billion, one hundred ninety-six million, three hundred eighty-six thousand, six hundred forty-two".