38918812050 has 144 divisors (see below), whose sum is σ = 109238508288. Its totient is φ = 9922262400.

The previous prime is 38918812043. The next prime is 38918812061. The reversal of 38918812050 is 5021881983.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 38918811987 and 38918812005.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1141044 + ... + 1174656.

It is an arithmetic number, because the mean of its divisors is an integer number (758600752).

Almost surely, 2^38918812050 is an apocalyptic number.

38918812050 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 38918812050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54619254144).

38918812050 is an abundant number, since it is smaller than the sum of its proper divisors (70319696238).

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

38918812050 is a wasteful number, since it uses less digits than its factorization.

38918812050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33745 (or 33737 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The spelling of 38918812050 in words is "thirty-eight billion, nine hundred eighteen million, eight hundred twelve thousand, fifty".