2544393998 has 32 divisors (see below), whose sum is σ = 4058726400. Its totient is φ = 1193692896.

The previous prime is 2544393991. The next prime is 2544394009. The reversal of 2544393998 is 8993934452.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2544393991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1988723 + ... + 1990001.

It is an arithmetic number, because the mean of its divisors is an integer number (126835200).

Almost surely, 2^2544393998 is an apocalyptic number.

2544393998 is a deficient number, since it is larger than the sum of its proper divisors (1514332402).

2544393998 is a wasteful number, since it uses less digits than its factorization.

2544393998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096.

The product of its digits is 8398080, while the sum is 56.

The square root of 2544393998 is about 50441.9864596945. The cubic root of 2544393998 is about 1365.1953095279.

The spelling of 2544393998 in words is "two billion, five hundred forty-four million, three hundred ninety-three thousand, nine hundred ninety-eight".