1981675 has 12 divisors (see below), whose sum is σ = 2537536. Its totient is φ = 1533600.

The previous prime is 1981669. The next prime is 1981687. The reversal of 1981675 is 5761891.

It is not a de Polignac number, because 1981675 - 2³ = 1981667 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 504 + ... + 2053.

2^1981675 is an apocalyptic number.

1981675 is a deficient number, since it is larger than the sum of its proper divisors (555861).

1981675 is a wasteful number, since it uses less digits than its factorization.

1981675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2598 (or 2593 counting only the distinct ones).

The product of its digits is 15120, while the sum is 37.

The square root of 1981675 is about 1407.7197874577. The cubic root of 1981675 is about 125.6061228370.

It can be divided in two parts, 19816 and 75, that added together give a palindrome (19891).

The spelling of 1981675 in words is "one million, nine hundred eighty-one thousand, six hundred seventy-five".