2541221919 has 6 divisors (see below), whose sum is σ = 3670653896. Its totient is φ = 1694147940.

The previous prime is 2541221843. The next prime is 2541221923. The reversal of 2541221919 is 9191221452.

2541221919 is a `hidden beast` number, since 2 + 541 + 2 + 21 + 91 + 9 = 666.

It is not a de Polignac number, because 2541221919 - 2⁸ = 2541221663 is a prime.

It is a super-2 number, since 2×2541221919² = 12915617683212085122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2541228919) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141178987 + ... + 141179004.

Almost surely, 2^2541221919 is an apocalyptic number.

2541221919 is a deficient number, since it is larger than the sum of its proper divisors (1129431977).

2541221919 is a wasteful number, since it uses less digits than its factorization.

2541221919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282357997 (or 282357994 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 2541221919 is about 50410.5338099092. The cubic root of 2541221919 is about 1364.6277469796.

The spelling of 2541221919 in words is "two billion, five hundred forty-one million, two hundred twenty-one thousand, nine hundred nineteen".