1973965 has 16 divisors (see below), whose sum is σ = 2764800. Its totient is φ = 1352400.

The previous prime is 1973957. The next prime is 1973971. The reversal of 1973965 is 5693791.

It is not a de Polignac number, because 1973965 - 2³ = 1973957 is a prime.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1140 + ... + 2290.

It is an arithmetic number, because the mean of its divisors is an integer number (172800).

2^1973965 is an apocalyptic number.

It is an amenable number.

1973965 is a deficient number, since it is larger than the sum of its proper divisors (790835).

1973965 is an equidigital number, since it uses as much as digits as its factorization.

1973965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177 (or 1163 counting only the distinct ones).

The product of its digits is 51030, while the sum is 40.

The square root of 1973965 is about 1404.9786475246. The cubic root of 1973965 is about 125.4430147155.

It can be divided in two parts, 19 and 73965, that added together give a square (73984 = 272²).

The spelling of 1973965 in words is "one million, nine hundred seventy-three thousand, nine hundred sixty-five".