1972628201 has 4 divisors (see below), whose sum is σ = 2088665172. Its totient is φ = 1856591232.

The previous prime is 1972628197. The next prime is 1972628209. The reversal of 1972628201 is 1028262791.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1301766400 + 670861801 = 36080^2 + 25901^2 .

It is a cyclic number.

It is not a de Polignac number, because 1972628201 - 2² = 1972628197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1972628209) 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, 58018460 + ... + 58018493.

It is an arithmetic number, because the mean of its divisors is an integer number (522166293).

Almost surely, 2^1972628201 is an apocalyptic number.

It is an amenable number.

1972628201 is a deficient number, since it is larger than the sum of its proper divisors (116036971).

1972628201 is a wasteful number, since it uses less digits than its factorization.

1972628201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116036970.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 1972628201 is about 44414.2792466567. The cubic root of 1972628201 is about 1254.1469101752.

The spelling of 1972628201 in words is "one billion, nine hundred seventy-two million, six hundred twenty-eight thousand, two hundred one".