1881632 has 24 divisors (see below), whose sum is σ = 3741696. Its totient is φ = 931392.

The previous prime is 1881631. The next prime is 1881641. The reversal of 1881632 is 2361881.

It is a junction number, because it is equal to n+sod(n) for n = 1881595 and 1881604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1881631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3833 + ... + 4295.

It is an arithmetic number, because the mean of its divisors is an integer number (155904).

2^1881632 is an apocalyptic number.

It is an amenable number.

1881632 is a deficient number, since it is larger than the sum of its proper divisors (1860064).

1881632 is a wasteful number, since it uses less digits than its factorization.

1881632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600 (or 592 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 1881632 is about 1371.7259201459. The cubic root of 1881632 is about 123.4558185813.

Subtracting 1881632 from its reverse (2361881), we obtain a square (480249 = 693²).

The spelling of 1881632 in words is "one million, eight hundred eighty-one thousand, six hundred thirty-two".