2236688981 has 8 divisors (see below), whose sum is σ = 2356598400. Its totient is φ = 2118668112.

The previous prime is 2236688959. The next prime is 2236689041. The reversal of 2236688981 is 1898866322.

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 2236688981 - 2²⁶ = 2169580117 is a prime.

It is a super-2 number, since 2×2236688981² = 10005555195453636722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2236688081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469706 + ... + 474443.

It is an arithmetic number, because the mean of its divisors is an integer number (294574800).

Almost surely, 2^2236688981 is an apocalyptic number.

It is an amenable number.

2236688981 is a deficient number, since it is larger than the sum of its proper divisors (119909419).

2236688981 is a wasteful number, since it uses less digits than its factorization.

2236688981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944275.

The product of its digits is 1990656, while the sum is 53.

The square root of 2236688981 is about 47293.6463068772. The cubic root of 2236688981 is about 1307.7815298237.

The spelling of 2236688981 in words is "two billion, two hundred thirty-six million, six hundred eighty-eight thousand, nine hundred eighty-one".