2541533643 has 24 divisors (see below), whose sum is σ = 4240422576. Its totient is φ = 1449715200.

The previous prime is 2541533641. The next prime is 2541533647. The reversal of 2541533643 is 3463351452.

2541533643 is a `hidden beast` number, since 2 + 5 + 4 + 1 + 5 + 3 + 3 + 643 = 666.

It is not a de Polignac number, because 2541533643 - 2¹ = 2541533641 is a prime.

It is a super-4 number, since 4×2541533643⁴ (a number of 39 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2541533598 and 2541533607.

It is not an unprimeable number, because it can be changed into a prime (2541533641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 753378 + ... + 756743.

It is an arithmetic number, because the mean of its divisors is an integer number (176684274).

Almost surely, 2^2541533643 is an apocalyptic number.

2541533643 is a deficient number, since it is larger than the sum of its proper divisors (1698888933).

2541533643 is a wasteful number, since it uses less digits than its factorization.

2541533643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1510155 (or 1510152 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

The square root of 2541533643 is about 50413.6255688876. The cubic root of 2541533643 is about 1364.6835429498.

The spelling of 2541533643 in words is "two billion, five hundred forty-one million, five hundred thirty-three thousand, six hundred forty-three".