18385810231270 has 16 divisors (see below), whose sum is σ = 33466306265280. Its totient is φ = 7271691237184.

The previous prime is 18385810231253. The next prime is 18385810231331. The reversal of 18385810231270 is 7213201858381.

It is a super-2 number, since 2×18385810231270² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10329105982 + ... + 10329107761.

It is an arithmetic number, because the mean of its divisors is an integer number (2091644141580).

Almost surely, 2^{18385810231270} is an apocalyptic number.

18385810231270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18385810231270 is a deficient number, since it is larger than the sum of its proper divisors (15080496034010).

18385810231270 is a wasteful number, since it uses less digits than its factorization.

18385810231270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20658213839.

The product of its (nonzero) digits is 645120, while the sum is 49.

The spelling of 18385810231270 in words is "eighteen trillion, three hundred eighty-five billion, eight hundred ten million, two hundred thirty-one thousand, two hundred seventy".