1983571201 has 2 divisors, whose sum is σ = 1983571202. Its totient is φ = 1983571200.

The previous prime is 1983571199. The next prime is 1983571223. The reversal of 1983571201 is 1021753891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1636121601 + 347449600 = 40449^2 + 18640^2 .

It is an emirp because it is prime and its reverse (1021753891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1983571201 - 2¹ = 1983571199 is a prime.

Together with 1983571199, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1983571001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 991785600 + 991785601.

It is an arithmetic number, because the mean of its divisors is an integer number (991785601).

Almost surely, 2^1983571201 is an apocalyptic number.

It is an amenable number.

1983571201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1983571201 is an equidigital number, since it uses as much as digits as its factorization.

1983571201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 1983571201 is about 44537.3012316642. The cubic root of 1983571201 is about 1256.4617288371.

The spelling of 1983571201 in words is "one billion, nine hundred eighty-three million, five hundred seventy-one thousand, two hundred one".