2197981336 has 8 divisors (see below), whose sum is σ = 4121215020. Its totient is φ = 1098990664.

The previous prime is 2197981333. The next prime is 2197981343. The reversal of 2197981336 is 6331897912.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2197981336² = 9662243906808689792, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2197981336.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2197981333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137373826 + ... + 137373841.

Almost surely, 2^2197981336 is an apocalyptic number.

It is an amenable number.

2197981336 is a deficient number, since it is larger than the sum of its proper divisors (1923233684).

2197981336 is a wasteful number, since it uses less digits than its factorization.

2197981336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274747673 (or 274747669 counting only the distinct ones).

The product of its digits is 489888, while the sum is 49.

The square root of 2197981336 is about 46882.6336290955. The cubic root of 2197981336 is about 1300.1935285848.

The spelling of 2197981336 in words is "two billion, one hundred ninety-seven million, nine hundred eighty-one thousand, three hundred thirty-six".