38180832505 has 4 divisors (see below), whose sum is σ = 45816999012. Its totient is φ = 30544666000.

The previous prime is 38180832493. The next prime is 38180832511. The reversal of 38180832505 is 50523808183.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29390644969 + 8790187536 = 171437^2 + 93756^2 .

It is not a de Polignac number, because 38180832505 - 2⁷ = 38180832377 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3818083246 + ... + 3818083255.

It is an arithmetic number, because the mean of its divisors is an integer number (11454249753).

Almost surely, 2^38180832505 is an apocalyptic number.

It is an amenable number.

38180832505 is a deficient number, since it is larger than the sum of its proper divisors (7636166507).

38180832505 is an equidigital number, since it uses as much as digits as its factorization.

38180832505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7636166506.

The product of its (nonzero) digits is 230400, while the sum is 43.

The spelling of 38180832505 in words is "thirty-eight billion, one hundred eighty million, eight hundred thirty-two thousand, five hundred five".