2530335781 has 4 divisors (see below), whose sum is σ = 2540923200. Its totient is φ = 2519748364.

The previous prime is 2530335779. The next prime is 2530335799. The reversal of 2530335781 is 1875330352.

2530335781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2530335781 - 2¹ = 2530335779 is a prime.

It is a super-2 number, since 2×2530335781² = 12805198329217759922, 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 2530335781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2530335581) 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, 5293351 + ... + 5293828.

It is an arithmetic number, because the mean of its divisors is an integer number (635230800).

Almost surely, 2^2530335781 is an apocalyptic number.

It is an amenable number.

2530335781 is a deficient number, since it is larger than the sum of its proper divisors (10587419).

2530335781 is a wasteful number, since it uses less digits than its factorization.

2530335781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10587418.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 2530335781 is about 50302.4430917625. The cubic root of 2530335781 is about 1362.6763511712.

The spelling of 2530335781 in words is "two billion, five hundred thirty million, three hundred thirty-five thousand, seven hundred eighty-one".