2546764381 has 4 divisors (see below), whose sum is σ = 2910587872. Its totient is φ = 2182940892.

The previous prime is 2546764379. The next prime is 2546764439. The reversal of 2546764381 is 1834676452.

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 2546764381 - 2¹ = 2546764379 is a prime.

It is a super-2 number, since 2×2546764381² = 12972017624660626322, 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 (2546764361) 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 3 ways as a sum of consecutive naturals, for example, 181911735 + ... + 181911748.

It is an arithmetic number, because the mean of its divisors is an integer number (727646968).

Almost surely, 2^2546764381 is an apocalyptic number.

It is an amenable number.

2546764381 is a deficient number, since it is larger than the sum of its proper divisors (363823491).

2546764381 is an equidigital number, since it uses as much as digits as its factorization.

2546764381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363823490.

The product of its digits is 967680, while the sum is 46.

The square root of 2546764381 is about 50465.4771205029. The cubic root of 2546764381 is about 1365.6191211661.

The spelling of 2546764381 in words is "two billion, five hundred forty-six million, seven hundred sixty-four thousand, three hundred eighty-one".