2544193138 has 32 divisors (see below), whose sum is σ = 4050383040. Its totient is φ = 1195223040.

The previous prime is 2544193121. The next prime is 2544193147. The reversal of 2544193138 is 8313914452.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2544193138.

It is an unprimeable number.

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, 3232381 + ... + 3233167.

It is an arithmetic number, because the mean of its divisors is an integer number (126574470).

Almost surely, 2^2544193138 is an apocalyptic number.

2544193138 is a deficient number, since it is larger than the sum of its proper divisors (1506189902).

2544193138 is a wasteful number, since it uses less digits than its factorization.

2544193138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402.

The product of its digits is 103680, while the sum is 40.

The square root of 2544193138 is about 50439.9954203011. The cubic root of 2544193138 is about 1365.1593847529.

The spelling of 2544193138 in words is "two billion, five hundred forty-four million, one hundred ninety-three thousand, one hundred thirty-eight".