1980000571 has 2 divisors, whose sum is σ = 1980000572. Its totient is φ = 1980000570.

The previous prime is 1980000551. The next prime is 1980000613. The reversal of 1980000571 is 1750000891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1980000571 - 2¹³ = 1979992379 is a prime.

It is a super-2 number, since 2×1980000571² = 7840804522320652082, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1980000511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 990000285 + 990000286.

It is an arithmetic number, because the mean of its divisors is an integer number (990000286).

Almost surely, 2^1980000571 is an apocalyptic number.

1980000571 is a deficient number, since it is larger than the sum of its proper divisors (1).

1980000571 is an equidigital number, since it uses as much as digits as its factorization.

1980000571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 31.

The square root of 1980000571 is about 44497.1973387089. The cubic root of 1980000571 is about 1255.7073563524.

The spelling of 1980000571 in words is "one billion, nine hundred eighty million, five hundred seventy-one", and thus it is an aban number.