20194000897 has 32 divisors (see below), whose sum is σ = 24282865152. Its totient is φ = 16419262464.

The previous prime is 20194000891. The next prime is 20194000913. The reversal of 20194000897 is 79800049102.

It is a cyclic number.

It is not a de Polignac number, because 20194000897 - 2³ = 20194000889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20194000891) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12335163 + ... + 12336799.

It is an arithmetic number, because the mean of its divisors is an integer number (758839536).

It is a Proth number, since it is equal to 38517 ⋅ 2¹⁹ + 1 and 38517 < 2¹⁹.

Almost surely, 2^20194000897 is an apocalyptic number.

It is an amenable number.

20194000897 is a deficient number, since it is larger than the sum of its proper divisors (4088864255).

20194000897 is a wasteful number, since it uses less digits than its factorization.

20194000897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257.

The product of its (nonzero) digits is 36288, while the sum is 40.

Adding to 20194000897 its reverse (79800049102), we get a palindrome (99994049999).

The spelling of 20194000897 in words is "twenty billion, one hundred ninety-four million, eight hundred ninety-seven", and thus it is an aban number.