2197981337 has 8 divisors (see below), whose sum is σ = 2264218752. Its totient is φ = 2132103600.

The previous prime is 2197981333. The next prime is 2197981343. The reversal of 2197981337 is 7331897912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2197981337 - 2² = 2197981333 is a prime.

It is a super-2 number, since 2×2197981337² = 9662243915600615138, which contains 22 as substring.

It is a Duffinian 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 in 7 ways as a sum of consecutive naturals, for example, 77489 + ... + 101982.

It is an arithmetic number, because the mean of its divisors is an integer number (283027344).

Almost surely, 2^2197981337 is an apocalyptic number.

It is an amenable number.

2197981337 is a deficient number, since it is larger than the sum of its proper divisors (66237415).

2197981337 is a wasteful number, since it uses less digits than its factorization.

2197981337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179839.

The product of its digits is 571536, while the sum is 50.

The square root of 2197981337 is about 46882.6336397605. The cubic root of 2197981337 is about 1300.1935287820.

The spelling of 2197981337 in words is "two billion, one hundred ninety-seven million, nine hundred eighty-one thousand, three hundred thirty-seven".