38021199805 has 12 divisors (see below), whose sum is σ = 48467164500. Its totient is φ = 28627725824.

The previous prime is 38021199793. The next prime is 38021199809. The reversal of 38021199805 is 50899112083.

It can be written as a sum of positive squares in 6 ways, for example, as 3921514884 + 34099684921 = 62622^2 + 184661^2 .

It is not a de Polignac number, because 38021199805 - 2¹³ = 38021191613 is a prime.

It is a super-2 number, since 2×38021199805² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38021199809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13154680 + ... + 13157569.

It is an arithmetic number, because the mean of its divisors is an integer number (4038930375).

Almost surely, 2^38021199805 is an apocalyptic number.

It is an amenable number.

38021199805 is a deficient number, since it is larger than the sum of its proper divisors (10445964695).

38021199805 is a wasteful number, since it uses less digits than its factorization.

38021199805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26312288 (or 26312271 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 46.

The spelling of 38021199805 in words is "thirty-eight billion, twenty-one million, one hundred ninety-nine thousand, eight hundred five".