1144928261438 has 32 divisors (see below), whose sum is σ = 1881381089280. Its totient is φ = 519355346400.

The previous prime is 1144928261387. The next prime is 1144928261453. The reversal of 1144928261438 is 8341628294411.

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 1144928261438.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16163 + ... + 1513313.

It is an arithmetic number, because the mean of its divisors is an integer number (58793159040).

Almost surely, 2^{1144928261438} is an apocalyptic number.

1144928261438 is a deficient number, since it is larger than the sum of its proper divisors (736452827842).

1144928261438 is a wasteful number, since it uses less digits than its factorization.

1144928261438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1497672.

The product of its digits is 2654208, while the sum is 53.

The spelling of 1144928261438 in words is "one trillion, one hundred forty-four billion, nine hundred twenty-eight million, two hundred sixty-one thousand, four hundred thirty-eight".