2541305891 has 16 divisors (see below), whose sum is σ = 2704627200. Its totient is φ = 2384430048.

The previous prime is 2541305867. The next prime is 2541305909. The reversal of 2541305891 is 1985031452.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2541305891 - 2⁶ = 2541305827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2541305801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115580 + ... + 135798.

It is an arithmetic number, because the mean of its divisors is an integer number (169039200).

Almost surely, 2^2541305891 is an apocalyptic number.

2541305891 is a deficient number, since it is larger than the sum of its proper divisors (163321309).

2541305891 is a wasteful number, since it uses less digits than its factorization.

2541305891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20378.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 2541305891 is about 50411.3666845088. The cubic root of 2541305891 is about 1364.6427777092.

The spelling of 2541305891 in words is "two billion, five hundred forty-one million, three hundred five thousand, eight hundred ninety-one".