2530340661 has 4 divisors (see below), whose sum is σ = 3373787552. Its totient is φ = 1686893772.

The previous prime is 2530340647. The next prime is 2530340663. The reversal of 2530340661 is 1660430352.

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 de Polignac number, because none of the positive numbers 2^k-2530340661 is a prime.

It is a super-3 number, since 3×2530340661³ (a number of 29 digits) contains 333 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 (2530340663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 421723441 + ... + 421723446.

It is an arithmetic number, because the mean of its divisors is an integer number (843446888).

Almost surely, 2^2530340661 is an apocalyptic number.

It is an amenable number.

2530340661 is a deficient number, since it is larger than the sum of its proper divisors (843446891).

2530340661 is an equidigital number, since it uses as much as digits as its factorization.

2530340661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843446890.

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 2530340661 is about 50302.4915983294. The cubic root of 2530340661 is about 1362.6772271889.

The spelling of 2530340661 in words is "two billion, five hundred thirty million, three hundred forty thousand, six hundred sixty-one".