38209776990 has 64 divisors (see below), whose sum is σ = 114331599360. Its totient is φ = 7939693440.

The previous prime is 38209776971. The next prime is 38209777037. The reversal of 38209776990 is 9967790283.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8268205 + ... + 8272824.

It is an arithmetic number, because the mean of its divisors is an integer number (1786431240).

Almost surely, 2^38209776990 is an apocalyptic number.

38209776990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38209776990 is an abundant number, since it is smaller than the sum of its proper divisors (76121822370).

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

38209776990 is a wasteful number, since it uses less digits than its factorization.

38209776990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16541057.

The product of its (nonzero) digits is 10287648, while the sum is 60.

The spelling of 38209776990 in words is "thirty-eight billion, two hundred nine million, seven hundred seventy-six thousand, nine hundred ninety".