1973881 has 16 divisors (see below), whose sum is σ = 2464000. Its totient is φ = 1539648.

The previous prime is 1973857. The next prime is 1973893. The reversal of 1973881 is 1883791.

It is a cyclic number.

It is not a de Polignac number, because 1973881 - 2⁹ = 1973369 is a prime.

It is a super-2 number, since 2×1973881² = 7792412404322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1973881.

It is not an unprimeable number, because it can be changed into a prime (1973821) 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 15 ways as a sum of consecutive naturals, for example, 9820 + ... + 10018.

It is an arithmetic number, because the mean of its divisors is an integer number (154000).

2^1973881 is an apocalyptic number.

It is an amenable number.

1973881 is a deficient number, since it is larger than the sum of its proper divisors (490119).

1973881 is a wasteful number, since it uses less digits than its factorization.

1973881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328.

The product of its digits is 12096, while the sum is 37.

The square root of 1973881 is about 1404.9487535138. The cubic root of 1973881 is about 125.4412353252.

The spelling of 1973881 in words is "one million, nine hundred seventy-three thousand, eight hundred eighty-one".