2240648081 has 4 divisors (see below), whose sum is σ = 2560740672. Its totient is φ = 1920555492.

The previous prime is 2240648023. The next prime is 2240648089. The reversal of 2240648081 is 1808460422.

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 2240648081 - 2¹⁴ = 2240631697 is a prime.

It is a super-2 number, since 2×2240648081² = 10041007645777965122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2240648089) 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, 160046285 + ... + 160046298.

It is an arithmetic number, because the mean of its divisors is an integer number (640185168).

Almost surely, 2^2240648081 is an apocalyptic number.

It is an amenable number.

2240648081 is a deficient number, since it is larger than the sum of its proper divisors (320092591).

2240648081 is an equidigital number, since it uses as much as digits as its factorization.

2240648081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320092590.

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 2240648081 is about 47335.4843748324. The cubic root of 2240648081 is about 1308.5526973797.

The spelling of 2240648081 in words is "two billion, two hundred forty million, six hundred forty-eight thousand, eighty-one".