2481281269 has 4 divisors (see below), whose sum is σ = 2611875040. Its totient is φ = 2350687500.

The previous prime is 2481281237. The next prime is 2481281279. The reversal of 2481281269 is 9621821842.

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 an emirpimes, since its reverse is a distinct semiprime: 9621821842 = 2 ⋅4810910921.

It is a cyclic number.

It is not a de Polignac number, because 2481281269 - 2⁵ = 2481281237 is a prime.

It is a super-2 number, since 2×2481281269² = 12313513471780500722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2481281219) 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, 65296857 + ... + 65296894.

It is an arithmetic number, because the mean of its divisors is an integer number (652968760).

Almost surely, 2^2481281269 is an apocalyptic number.

It is an amenable number.

2481281269 is a deficient number, since it is larger than the sum of its proper divisors (130593771).

2481281269 is a wasteful number, since it uses less digits than its factorization.

2481281269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130593770.

The product of its digits is 110592, while the sum is 43.

The square root of 2481281269 is about 49812.4609811641. The cubic root of 2481281269 is about 1353.8129551214.

The spelling of 2481281269 in words is "two billion, four hundred eighty-one million, two hundred eighty-one thousand, two hundred sixty-nine".