1920271201 has 2 divisors, whose sum is σ = 1920271202. Its totient is φ = 1920271200.

The previous prime is 1920271181. The next prime is 1920271211. The reversal of 1920271201 is 1021720291.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1324960000 + 595311201 = 36400^2 + 24399^2 .

It is a cyclic number.

It is not a de Polignac number, because 1920271201 - 2¹⁵ = 1920238433 is a prime.

It is not a weakly prime, because it can be changed into another prime (1920271211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 960135600 + 960135601.

It is an arithmetic number, because the mean of its divisors is an integer number (960135601).

Almost surely, 2^1920271201 is an apocalyptic number.

It is an amenable number.

1920271201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1920271201 is an equidigital number, since it uses as much as digits as its factorization.

1920271201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 1920271201 is about 43820.8991350018. The cubic root of 1920271201 is about 1242.9515193878.

Adding to 1920271201 its reverse (1021720291), we get a palindrome (2941991492).

The spelling of 1920271201 in words is "one billion, nine hundred twenty million, two hundred seventy-one thousand, two hundred one".