38131945097 has 4 divisors (see below), whose sum is σ = 38149256400. Its totient is φ = 38114633796.

The previous prime is 38131945087. The next prime is 38131945121. The reversal of 38131945097 is 79054913183.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79054913183 = 1049 ⋅75362167.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38131945097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38131945037) 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, 8652347 + ... + 8656752.

It is an arithmetic number, because the mean of its divisors is an integer number (9537314100).

Almost surely, 2^38131945097 is an apocalyptic number.

It is an amenable number.

38131945097 is a deficient number, since it is larger than the sum of its proper divisors (17311303).

38131945097 is a wasteful number, since it uses less digits than its factorization.

38131945097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17311302.

The product of its (nonzero) digits is 816480, while the sum is 50.

The spelling of 38131945097 in words is "thirty-eight billion, one hundred thirty-one million, nine hundred forty-five thousand, ninety-seven".