2240927981 has 8 divisors (see below), whose sum is σ = 2377418040. Its totient is φ = 2104956928.

The previous prime is 2240927971. The next prime is 2240927989. The reversal of 2240927981 is 1897290422.

2240927981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 884110756 + 1356817225 = 29734^2 + 36835^2 .

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 2240927981 - 2¹⁸ = 2240665837 is a prime.

It is a super-2 number, since 2×2240927981² = 10043516432057472722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2240927989) 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, 120836 + ... + 138141.

It is an arithmetic number, because the mean of its divisors is an integer number (297177255).

Almost surely, 2^2240927981 is an apocalyptic number.

It is an amenable number.

2240927981 is a deficient number, since it is larger than the sum of its proper divisors (136490059).

2240927981 is a wasteful number, since it uses less digits than its factorization.

2240927981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259503.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 2240927981 is about 47338.4408382870. The cubic root of 2240927981 is about 1308.6071829031.

The spelling of 2240927981 in words is "two billion, two hundred forty million, nine hundred twenty-seven thousand, nine hundred eighty-one".