164590581986018 has 8 divisors (see below), whose sum is σ = 261408571389612. Its totient is φ = 77454391522816.

The previous prime is 164590581985987. The next prime is 164590581986057. The reversal of 164590581986018 is 810689185095461.

164590581986018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 160026876929929 + 4563705056089 = 12650173^2 + 2136283^2 .

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

It is a super-2 number, since 2×164590581986018² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2420449735055 + ... + 2420449735122.

Almost surely, 2^{164590581986018} is an apocalyptic number.

164590581986018 is a deficient number, since it is larger than the sum of its proper divisors (96817989403594).

164590581986018 is a wasteful number, since it uses less digits than its factorization.

164590581986018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4840899470196.

The product of its (nonzero) digits is 149299200, while the sum is 71.

The spelling of 164590581986018 in words is "one hundred sixty-four trillion, five hundred ninety billion, five hundred eighty-one million, nine hundred eighty-six thousand, eighteen".