2541689741 has 4 divisors (see below), whose sum is σ = 2541790812. Its totient is φ = 2541588672.

The previous prime is 2541689723. The next prime is 2541689747. The reversal of 2541689741 is 1479861452.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 164737225 + 2376952516 = 12835^2 + 48754^2 .

It is a cyclic number.

It is not a de Polignac number, because 2541689741 - 2¹⁴ = 2541673357 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 (2541689747) 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, 20051 + ... + 74063.

It is an arithmetic number, because the mean of its divisors is an integer number (635447703).

Almost surely, 2^2541689741 is an apocalyptic number.

It is an amenable number.

2541689741 is a deficient number, since it is larger than the sum of its proper divisors (101071).

2541689741 is an equidigital number, since it uses as much as digits as its factorization.

2541689741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101070.

The product of its digits is 483840, while the sum is 47.

The square root of 2541689741 is about 50415.1737178401. The cubic root of 2541689741 is about 1364.7114814625.

The spelling of 2541689741 in words is "two billion, five hundred forty-one million, six hundred eighty-nine thousand, seven hundred forty-one".