2541645263 has 8 divisors (see below), whose sum is σ = 2590387776. Its totient is φ = 2492932000.

The previous prime is 2541645241. The next prime is 2541645277. The reversal of 2541645263 is 3625461452.

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 2541645263 - 2²⁰ = 2540596687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2541645233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261338 + ... + 270888.

It is an arithmetic number, because the mean of its divisors is an integer number (323798472).

Almost surely, 2^2541645263 is an apocalyptic number.

2541645263 is a deficient number, since it is larger than the sum of its proper divisors (48742513).

2541645263 is an equidigital number, since it uses as much as digits as its factorization.

2541645263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14625.

The product of its digits is 172800, while the sum is 38.

The square root of 2541645263 is about 50414.7325987156. The cubic root of 2541645263 is about 1364.7035208802.

The spelling of 2541645263 in words is "two billion, five hundred forty-one million, six hundred forty-five thousand, two hundred sixty-three".