1936881 has 24 divisors (see below), whose sum is σ = 2981160. Its totient is φ = 1209600.

The previous prime is 1936871. The next prime is 1936889. The reversal of 1936881 is 1886391.

It can be written as a sum of positive squares in 4 ways, for example, as 90000 + 1846881 = 300^2 + 1359^2 .

It is not a de Polignac number, because 1936881 - 2⁶ = 1936817 is a prime.

It is a super-2 number, since 2×1936881² = 7503016016322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1936889) 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 23 ways as a sum of consecutive naturals, for example, 10611 + ... + 10791.

It is an arithmetic number, because the mean of its divisors is an integer number (124215).

2^1936881 is an apocalyptic number.

It is an amenable number.

1936881 is a deficient number, since it is larger than the sum of its proper divisors (1044279).

1936881 is a wasteful number, since it uses less digits than its factorization.

1936881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 254 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 1936881 is about 1391.7187215813. The cubic root of 1936881 is about 124.6524961572.

The spelling of 1936881 in words is "one million, nine hundred thirty-six thousand, eight hundred eighty-one".