18896205973 has 4 divisors (see below), whose sum is σ = 18900263008. Its totient is φ = 18892148940.

The previous prime is 18896205949. The next prime is 18896205997. The reversal of 18896205973 is 37950269881.

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, and also an emirpimes, since its reverse is a distinct semiprime: 37950269881 = 1049 ⋅36177569.

It is an interprime number because it is at equal distance from previous prime (18896205949) and next prime (18896205997).

It is a cyclic number.

It is not a de Polignac number, because 18896205973 - 2⁵ = 18896205941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18896208973) 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, 2021523 + ... + 2030848.

It is an arithmetic number, because the mean of its divisors is an integer number (4725065752).

Almost surely, 2^18896205973 is an apocalyptic number.

It is an amenable number.

18896205973 is a deficient number, since it is larger than the sum of its proper divisors (4057035).

18896205973 is an equidigital number, since it uses as much as digits as its factorization.

18896205973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4057034.

The product of its (nonzero) digits is 6531840, while the sum is 58.

The spelling of 18896205973 in words is "eighteen billion, eight hundred ninety-six million, two hundred five thousand, nine hundred seventy-three".