18138678035 has 8 divisors (see below), whose sum is σ = 22912014480. Its totient is φ = 13747208544.

The previous prime is 18138678031. The next prime is 18138678049. The reversal of 18138678035 is 53087683181.

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 18138678035 - 2² = 18138678031 is a prime.

It is a super-2 number, since 2×18138678035² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18138678031) 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, 95466632 + ... + 95466821.

It is an arithmetic number, because the mean of its divisors is an integer number (2864001810).

Almost surely, 2^18138678035 is an apocalyptic number.

18138678035 is a deficient number, since it is larger than the sum of its proper divisors (4773336445).

18138678035 is a wasteful number, since it uses less digits than its factorization.

18138678035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190933477.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 18138678035 in words is "eighteen billion, one hundred thirty-eight million, six hundred seventy-eight thousand, thirty-five".