2097161601 has 4 divisors (see below), whose sum is σ = 2796215472. Its totient is φ = 1398107732.

The previous prime is 2097161513. The next prime is 2097161609. The reversal of 2097161601 is 1061617902.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2097161601 - 2¹⁵ = 2097128833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2097161609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349526931 + ... + 349526936.

It is an arithmetic number, because the mean of its divisors is an integer number (699053868).

Almost surely, 2^2097161601 is an apocalyptic number.

It is an amenable number.

2097161601 is a deficient number, since it is larger than the sum of its proper divisors (699053871).

2097161601 is an equidigital number, since it uses as much as digits as its factorization.

2097161601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699053870.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 2097161601 is about 45794.7770056805. Note that the first 3 decimals coincide. The cubic root of 2097161601 is about 1280.0019533255.

The spelling of 2097161601 in words is "two billion, ninety-seven million, one hundred sixty-one thousand, six hundred one".