1972173683 has 4 divisors (see below), whose sum is σ = 1972285728. Its totient is φ = 1972061640.

The previous prime is 1972173659. The next prime is 1972173719. The reversal of 1972173683 is 3863712791.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1972173683 - 2¹⁶ = 1972108147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1972173653) 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, 23216 + ... + 66957.

It is an arithmetic number, because the mean of its divisors is an integer number (493071432).

Almost surely, 2^1972173683 is an apocalyptic number.

1972173683 is a deficient number, since it is larger than the sum of its proper divisors (112045).

1972173683 is an equidigital number, since it uses as much as digits as its factorization.

1972173683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112044.

The product of its digits is 381024, while the sum is 47.

The square root of 1972173683 is about 44409.1621515200. The cubic root of 1972173683 is about 1254.0505791093.

The spelling of 1972173683 in words is "one billion, nine hundred seventy-two million, one hundred seventy-three thousand, six hundred eighty-three".