2541438605 has 4 divisors (see below), whose sum is σ = 3049726332. Its totient is φ = 2033150880.

The previous prime is 2541438593. The next prime is 2541438617. The reversal of 2541438605 is 5068341452.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2541438593) and next prime (2541438617).

It can be written as a sum of positive squares in 2 ways, for example, as 583995556 + 1957443049 = 24166^2 + 44243^2 .

It is not a de Polignac number, because 2541438605 - 2⁶ = 2541438541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254143856 + ... + 254143865.

It is an arithmetic number, because the mean of its divisors is an integer number (762431583).

Almost surely, 2^2541438605 is an apocalyptic number.

It is an amenable number.

2541438605 is a deficient number, since it is larger than the sum of its proper divisors (508287727).

2541438605 is an equidigital number, since it uses as much as digits as its factorization.

2541438605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508287726.

The product of its (nonzero) digits is 115200, while the sum is 38.

The square root of 2541438605 is about 50412.6829776000. The cubic root of 2541438605 is about 1364.6665324318. Note that the first 3 decimals are identical.

The spelling of 2541438605 in words is "two billion, five hundred forty-one million, four hundred thirty-eight thousand, six hundred five".