2081589997 has 2 divisors, whose sum is σ = 2081589998. Its totient is φ = 2081589996.

The previous prime is 2081589971. The next prime is 2081590001. The reversal of 2081589997 is 7999851802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1329404521 + 752185476 = 36461^2 + 27426^2 .

It is a cyclic number.

It is not a de Polignac number, because 2081589997 - 2¹⁹ = 2081065709 is a prime.

It is a super-2 number, since 2×2081589997² = 8666033831220920018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2081589947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1040794998 + 1040794999.

It is an arithmetic number, because the mean of its divisors is an integer number (1040794999).

Almost surely, 2^2081589997 is an apocalyptic number.

It is an amenable number.

2081589997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2081589997 is an equidigital number, since it uses as much as digits as its factorization.

2081589997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3265920, while the sum is 58.

The square root of 2081589997 is about 45624.4451692292. The cubic root of 2081589997 is about 1276.8260385528.

The spelling of 2081589997 in words is "two billion, eighty-one million, five hundred eighty-nine thousand, nine hundred ninety-seven".