1881412839 has 20 divisors (see below), whose sum is σ = 2825243520. Its totient is φ = 1247698080.

The previous prime is 1881412801. The next prime is 1881412853. The reversal of 1881412839 is 9382141881.

It is not a de Polignac number, because 1881412839 - 2¹⁵ = 1881380071 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1881412794 and 1881412803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1881412859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 45334 + ... + 76275.

It is an arithmetic number, because the mean of its divisors is an integer number (141262176).

Almost surely, 2^1881412839 is an apocalyptic number.

1881412839 is a deficient number, since it is larger than the sum of its proper divisors (943830681).

1881412839 is a wasteful number, since it uses less digits than its factorization.

1881412839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121812 (or 121803 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The square root of 1881412839 is about 43375.2560684084. The cubic root of 1881412839 is about 1234.5102526871.

The spelling of 1881412839 in words is "one billion, eight hundred eighty-one million, four hundred twelve thousand, eight hundred thirty-nine".