20018350164 has 24 divisors (see below), whose sum is σ = 46726663648. Its totient is φ = 6670329120.

The previous prime is 20018350159. The next prime is 20018350169. The reversal of 20018350164 is 46105381002.

It is an interprime number because it is at equal distance from previous prime (20018350159) and next prime (20018350169).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20018350169) 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, 272647 + ... + 338190.

Almost surely, 2^20018350164 is an apocalyptic number.

It is an amenable number.

20018350164 is an abundant number, since it is smaller than the sum of its proper divisors (26708313484).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20018350164 is a wasteful number, since it uses less digits than its factorization.

20018350164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613575 (or 613573 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 20018350164 in words is "twenty billion, eighteen million, three hundred fifty thousand, one hundred sixty-four".