1944448121 has 16 divisors (see below), whose sum is σ = 2425915008. Its totient is φ = 1514112000.

The previous prime is 1944448109. The next prime is 1944448127. The reversal of 1944448121 is 1218444491.

It is a cyclic number.

It is not a de Polignac number, because 1944448121 - 2¹⁴ = 1944431737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1944448127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115391 + ... + 131163.

It is an arithmetic number, because the mean of its divisors is an integer number (151619688).

Almost surely, 2^1944448121 is an apocalyptic number.

1944448121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1944448121 is a deficient number, since it is larger than the sum of its proper divisors (481466887).

1944448121 is a wasteful number, since it uses less digits than its factorization.

1944448121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17392.

The product of its digits is 36864, while the sum is 38.

The square root of 1944448121 is about 44095.8968726116. The cubic root of 1944448121 is about 1248.1461845337.

The spelling of 1944448121 in words is "one billion, nine hundred forty-four million, four hundred forty-eight thousand, one hundred twenty-one".