2097881977 has 2 divisors, whose sum is σ = 2097881978. Its totient is φ = 2097881976.

The previous prime is 2097881971. The next prime is 2097881983. The reversal of 2097881977 is 7791887902.

It is a balanced prime because it is at equal distance from previous prime (2097881971) and next prime (2097881983).

It can be written as a sum of positive squares in only one way, i.e., 2084013801 + 13868176 = 45651^2 + 3724^2 .

It is a cyclic number.

It is not a de Polignac number, because 2097881977 - 2¹⁵ = 2097849209 is a prime.

It is a super-2 number, since 2×2097881977² = 8802217578842857058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2097881971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1048940988 + 1048940989.

It is an arithmetic number, because the mean of its divisors is an integer number (1048940989).

Almost surely, 2^2097881977 is an apocalyptic number.

It is an amenable number.

2097881977 is a deficient number, since it is larger than the sum of its proper divisors (1).

2097881977 is an equidigital number, since it uses as much as digits as its factorization.

2097881977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3556224, while the sum is 58.

The square root of 2097881977 is about 45802.6415941264. The cubic root of 2097881977 is about 1280.1484969726.

The spelling of 2097881977 in words is "two billion, ninety-seven million, eight hundred eighty-one thousand, nine hundred seventy-seven".