19973962 has 16 divisors (see below), whose sum is σ = 30772584. Its totient is φ = 9720000.

The previous prime is 19973939. The next prime is 19973971. The reversal of 19973962 is 26937991.

It can be written as a sum of positive squares in 4 ways, for example, as 18653761 + 1320201 = 4319^2 + 1149^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11512 + ... + 13132.

Almost surely, 2^19973962 is an apocalyptic number.

19973962 is a deficient number, since it is larger than the sum of its proper divisors (10798622).

19973962 is a wasteful number, since it uses less digits than its factorization.

19973962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785.

The product of its digits is 183708, while the sum is 46.

The square root of 19973962 is about 4469.2238699801. The cubic root of 19973962 is about 271.3239138262.

The spelling of 19973962 in words is "nineteen million, nine hundred seventy-three thousand, nine hundred sixty-two".