38108400787 has 4 divisors (see below), whose sum is σ = 38112922840. Its totient is φ = 38103878736.

The previous prime is 38108400773. The next prime is 38108400791. The reversal of 38108400787 is 78700480183.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38108400787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38108410787) by changing a digit.

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, 2248362 + ... + 2265247.

It is an arithmetic number, because the mean of its divisors is an integer number (9528230710).

Almost surely, 2^38108400787 is an apocalyptic number.

38108400787 is a deficient number, since it is larger than the sum of its proper divisors (4522053).

38108400787 is an equidigital number, since it uses as much as digits as its factorization.

38108400787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4522052.

The product of its (nonzero) digits is 301056, while the sum is 46.

The spelling of 38108400787 in words is "thirty-eight billion, one hundred eight million, four hundred thousand, seven hundred eighty-seven".