2541955869 has 18 divisors (see below), whose sum is σ = 3875138046. Its totient is φ = 1605443760.

The previous prime is 2541955861. The next prime is 2541955873. The reversal of 2541955869 is 9685591452.

2541955869 is a `hidden beast` number, since 2 + 54 + 1 + 9 + 5 + 586 + 9 = 666.

2541955869 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1410978969 + 1130976900 = 37563^2 + 33630^2 .

It is not a de Polignac number, because 2541955869 - 2³ = 2541955861 is a prime.

It is a super-2 number, since 2×2541955869² = 12923079279887090322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2541955861) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 387942 + ... + 394439.

It is an arithmetic number, because the mean of its divisors is an integer number (215285447).

Almost surely, 2^2541955869 is an apocalyptic number.

It is an amenable number.

2541955869 is a deficient number, since it is larger than the sum of its proper divisors (1333182177).

2541955869 is a wasteful number, since it uses less digits than its factorization.

2541955869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 782425 (or 782403 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 54.

The square root of 2541955869 is about 50417.8130128628. The cubic root of 2541955869 is about 1364.7591105727.

The spelling of 2541955869 in words is "two billion, five hundred forty-one million, nine hundred fifty-five thousand, eight hundred sixty-nine".