18918371095 has 8 divisors (see below), whose sum is σ = 24448356576. Its totient is φ = 13970489376.

The previous prime is 18918371093. The next prime is 18918371111. The reversal of 18918371095 is 59017381981.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18918371095 - 2¹ = 18918371093 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 (18918371093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145525867 + ... + 145525996.

It is an arithmetic number, because the mean of its divisors is an integer number (3056044572).

Almost surely, 2^18918371095 is an apocalyptic number.

18918371095 is a deficient number, since it is larger than the sum of its proper divisors (5529985481).

18918371095 is a wasteful number, since it uses less digits than its factorization.

18918371095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291051881.

The product of its (nonzero) digits is 544320, while the sum is 52.

The spelling of 18918371095 in words is "eighteen billion, nine hundred eighteen million, three hundred seventy-one thousand, ninety-five".