18738895032 has 192 divisors, whose sum is σ = 59712307200. Its totient is φ = 5233870080.

The previous prime is 18738894959. The next prime is 18738895039. The reversal of 18738895032 is 23059883781.

18738895032 is a `hidden beast` number, since 187 + 388 + 9 + 50 + 32 = 666.

It is a super-2 number, since 2×18738895032² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18738895032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18738895039) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13167873 + ... + 13169295.

It is an arithmetic number, because the mean of its divisors is an integer number (311001600).

Almost surely, 2^18738895032 is an apocalyptic number.

18738895032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18738895032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29856153600).

18738895032 is an abundant number, since it is smaller than the sum of its proper divisors (40973412168).

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

18738895032 is a wasteful number, since it uses less digits than its factorization.

18738895032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2738 (or 2731 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 18738895032 in words is "eighteen billion, seven hundred thirty-eight million, eight hundred ninety-five thousand, thirty-two".