2196983681 has 4 divisors (see below), whose sum is σ = 2208024000. Its totient is φ = 2185943364.

The previous prime is 2196983603. The next prime is 2196983707. The reversal of 2196983681 is 1863896912.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2196983681 - 2²² = 2192789377 is a prime.

It is a super-2 number, since 2×2196983681² = 9653474589160619522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2196983081) 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, 5519861 + ... + 5520258.

It is an arithmetic number, because the mean of its divisors is an integer number (552006000).

Almost surely, 2^2196983681 is an apocalyptic number.

It is an amenable number.

2196983681 is a deficient number, since it is larger than the sum of its proper divisors (11040319).

2196983681 is a wasteful number, since it uses less digits than its factorization.

2196983681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11040318.

The product of its digits is 1119744, while the sum is 53.

The square root of 2196983681 is about 46871.9925008528. The cubic root of 2196983681 is about 1299.9967812544.

The spelling of 2196983681 in words is "two billion, one hundred ninety-six million, nine hundred eighty-three thousand, six hundred eighty-one".