38731215161813 has 8 divisors (see below), whose sum is σ = 38839301500608. Its totient is φ = 38623214712384.

The previous prime is 38731215161809. The next prime is 38731215161827. The reversal of 38731215161813 is 31816151213783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 38731215161813 - 2² = 38731215161809 is a prime.

It is a super-3 number, since 3×38731215161813³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38731215161803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20569145 + ... + 22373022.

It is an arithmetic number, because the mean of its divisors is an integer number (4854912687576).

Almost surely, 2^{38731215161813} is an apocalyptic number.

It is an amenable number.

38731215161813 is a deficient number, since it is larger than the sum of its proper divisors (108086338795).

38731215161813 is a wasteful number, since it uses less digits than its factorization.

38731215161813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42944683.

The product of its digits is 725760, while the sum is 50.

The spelling of 38731215161813 in words is "thirty-eight trillion, seven hundred thirty-one billion, two hundred fifteen million, one hundred sixty-one thousand, eight hundred thirteen".