18838165069 has 8 divisors (see below), whose sum is σ = 19957339008. Its totient is φ = 17720218560.

The previous prime is 18838165067. The next prime is 18838165079. The reversal of 18838165069 is 96056183881.

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 18838165069 - 2¹ = 18838165067 is a prime.

It is a super-2 number, since 2×18838165069² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18838165061) 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, 275157 + ... + 336730.

It is an arithmetic number, because the mean of its divisors is an integer number (2494667376).

Almost surely, 2^18838165069 is an apocalyptic number.

It is an amenable number.

18838165069 is a deficient number, since it is larger than the sum of its proper divisors (1119173939).

18838165069 is a wasteful number, since it uses less digits than its factorization.

18838165069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613715.

The product of its (nonzero) digits is 2488320, while the sum is 55.

The spelling of 18838165069 in words is "eighteen billion, eight hundred thirty-eight million, one hundred sixty-five thousand, sixty-nine".