1972722127 has 4 divisors (see below), whose sum is σ = 2005061896. Its totient is φ = 1940382360.

The previous prime is 1972722119. The next prime is 1972722163. The reversal of 1972722127 is 7212272791.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1972722127 - 2³ = 1972722119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1972722127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972722197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16169793 + ... + 16169914.

It is an arithmetic number, because the mean of its divisors is an integer number (501265474).

Almost surely, 2^1972722127 is an apocalyptic number.

1972722127 is a deficient number, since it is larger than the sum of its proper divisors (32339769).

1972722127 is an equidigital number, since it uses as much as digits as its factorization.

1972722127 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32339768.

The product of its digits is 49392, while the sum is 40.

The square root of 1972722127 is about 44415.3366192355. The cubic root of 1972722127 is about 1254.1668151144.

The spelling of 1972722127 in words is "one billion, nine hundred seventy-two million, seven hundred twenty-two thousand, one hundred twenty-seven".