2531894641 has 8 divisors (see below), whose sum is σ = 2580422184. Its totient is φ = 2483395200.

The previous prime is 2531894639. The next prime is 2531894681. The reversal of 2531894641 is 1464981352.

It can be written as a sum of positive squares in 4 ways, for example, as 2085840241 + 446054400 = 45671^2 + 21120^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2531894641 - 2¹ = 2531894639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2531894681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308491 + ... + 316591.

It is an arithmetic number, because the mean of its divisors is an integer number (322552773).

Almost surely, 2^2531894641 is an apocalyptic number.

It is an amenable number.

2531894641 is a deficient number, since it is larger than the sum of its proper divisors (48527543).

2531894641 is an equidigital number, since it uses as much as digits as its factorization.

2531894641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14051.

The product of its digits is 207360, while the sum is 43.

The square root of 2531894641 is about 50317.9355796718. The cubic root of 2531894641 is about 1362.9561276868.

The spelling of 2531894641 in words is "two billion, five hundred thirty-one million, eight hundred ninety-four thousand, six hundred forty-one".