1944884491 has 8 divisors (see below), whose sum is σ = 2123366400. Its totient is φ = 1766681640.

The previous prime is 1944884429. The next prime is 1944884497.

It is a happy number.

1944884491 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1944884491 - 2⁷ = 1944884363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1944884497) 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 7 ways as a sum of consecutive naturals, for example, 55051 + ... + 83188.

It is an arithmetic number, because the mean of its divisors is an integer number (265420800).

Almost surely, 2^1944884491 is an apocalyptic number.

1944884491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1944884491 is a deficient number, since it is larger than the sum of its proper divisors (178481909).

1944884491 is a wasteful number, since it uses less digits than its factorization.

1944884491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139529.

The product of its digits is 1327104, while the sum is 52.

The square root of 1944884491 is about 44100.8445610739. The cubic root of 1944884491 is about 1248.2395465535.

The spelling of 1944884491 in words is "one billion, nine hundred forty-four million, eight hundred eighty-four thousand, four hundred ninety-one".