1881836 has 24 divisors (see below), whose sum is σ = 3783360. Its totient is φ = 810000.

The previous prime is 1881823. The next prime is 1881851. The reversal of 1881836 is 6381881.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1881796 and 1881805.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 290 + ... + 1961.

It is an arithmetic number, because the mean of its divisors is an integer number (157640).

2^1881836 is an apocalyptic number.

It is an amenable number.

1881836 is an abundant number, since it is smaller than the sum of its proper divisors (1901524).

1881836 is a wasteful number, since it uses less digits than its factorization.

1881836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2285 (or 2283 counting only the distinct ones).

The product of its digits is 9216, while the sum is 35.

The square root of 1881836 is about 1371.8002770083. The cubic root of 1881836 is about 123.4602799703.

It can be divided in two parts, 1881 and 836, that multiplied together give a square (1572516 = 1254²).

The spelling of 1881836 in words is "one million, eight hundred eighty-one thousand, eight hundred thirty-six".