2442235681 has 4 divisors (see below), whose sum is σ = 2442345664. Its totient is φ = 2442125700.

The previous prime is 2442235673. The next prime is 2442235687. The reversal of 2442235681 is 1865322442.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1865322442 = 2 ⋅932661221.

It is a cyclic number.

It is not a de Polignac number, because 2442235681 - 2³ = 2442235673 is a prime.

It is a super-2 number, since 2×2442235681² = 11929030243099067522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2442235681.

It is not an unprimeable number, because it can be changed into a prime (2442235687) 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 3 ways as a sum of consecutive naturals, for example, 8685 + ... + 70426.

It is an arithmetic number, because the mean of its divisors is an integer number (610586416).

Almost surely, 2^2442235681 is an apocalyptic number.

It is an amenable number.

2442235681 is a deficient number, since it is larger than the sum of its proper divisors (109983).

2442235681 is an equidigital number, since it uses as much as digits as its factorization.

2442235681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109982.

The product of its digits is 92160, while the sum is 37.

The square root of 2442235681 is about 49418.9809789720. The cubic root of 2442235681 is about 1346.6741508246.

The spelling of 2442235681 in words is "two billion, four hundred forty-two million, two hundred thirty-five thousand, six hundred eighty-one".