2097881993 has 4 divisors (see below), whose sum is σ = 2101271760. Its totient is φ = 2094492228.

The previous prime is 2097881983. The next prime is 2097882001. The reversal of 2097881993 is 3991887902.

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 2097881993 - 2⁴ = 2097881977 is a prime.

It is a super-2 number, since 2×2097881993² = 8802217713107304098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2097881963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1693955 + ... + 1695192.

It is an arithmetic number, because the mean of its divisors is an integer number (525317940).

Almost surely, 2^2097881993 is an apocalyptic number.

It is an amenable number.

2097881993 is a deficient number, since it is larger than the sum of its proper divisors (3389767).

2097881993 is an equidigital number, since it uses as much as digits as its factorization.

2097881993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3389766.

The product of its (nonzero) digits is 1959552, while the sum is 56.

The square root of 2097881993 is about 45802.6417687888. The cubic root of 2097881993 is about 1280.1485002270.

The spelling of 2097881993 in words is "two billion, ninety-seven million, eight hundred eighty-one thousand, nine hundred ninety-three".