18053878097 has 4 divisors (see below), whose sum is σ = 18056435520. Its totient is φ = 18051320676.

The previous prime is 18053878091. The next prime is 18053878151. The reversal of 18053878097 is 79087835081.

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 18053878097 - 2¹⁴ = 18053861713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18053878091) 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, 1268093 + ... + 1282250.

It is an arithmetic number, because the mean of its divisors is an integer number (4514108880).

Almost surely, 2^18053878097 is an apocalyptic number.

It is an amenable number.

18053878097 is a deficient number, since it is larger than the sum of its proper divisors (2557423).

18053878097 is an equidigital number, since it uses as much as digits as its factorization.

18053878097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2557422.

The product of its (nonzero) digits is 3386880, while the sum is 56.

The spelling of 18053878097 in words is "eighteen billion, fifty-three million, eight hundred seventy-eight thousand, ninety-seven".