2541645438 has 16 divisors (see below), whose sum is σ = 5088195840. Its totient is φ = 846397656.

The previous prime is 2541645437. The next prime is 2541645451. The reversal of 2541645438 is 8345461452.

It is a self number, because there is not a number n which added to its sum of digits gives 2541645438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2541645437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197620 + ... + 210087.

It is an arithmetic number, because the mean of its divisors is an integer number (318012240).

Almost surely, 2^2541645438 is an apocalyptic number.

2541645438 is an abundant number, since it is smaller than the sum of its proper divisors (2546550402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2541645438 is a wasteful number, since it uses less digits than its factorization.

2541645438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408751.

The product of its digits is 460800, while the sum is 42.

The square root of 2541645438 is about 50414.7343343194. The cubic root of 2541645438 is about 1364.7035522015.

The spelling of 2541645438 in words is "two billion, five hundred forty-one million, six hundred forty-five thousand, four hundred thirty-eight".