38918809290 has 32 divisors (see below), whose sum is σ = 93411242496. Its totient is φ = 10377671360.

The previous prime is 38918809283. The next prime is 38918809333. The reversal of 38918809290 is 9290881983.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 38918809290.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 569560 + ... + 634220.

It is an arithmetic number, because the mean of its divisors is an integer number (2919101328).

Almost surely, 2^38918809290 is an apocalyptic number.

38918809290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38918809290 is an abundant number, since it is smaller than the sum of its proper divisors (54492433206).

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

38918809290 is a wasteful number, since it uses less digits than its factorization.

38918809290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84734.

The product of its (nonzero) digits is 2239488, while the sum is 57.

The spelling of 38918809290 in words is "thirty-eight billion, nine hundred eighteen million, eight hundred nine thousand, two hundred ninety".