38934581861 has 32 divisors (see below), whose sum is σ = 49007523840. Its totient is φ = 30159480384.

The previous prime is 38934581837. The next prime is 38934581867. The reversal of 38934581861 is 16818543983.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38934581861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38934581797 and 38934581806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38934581867) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1123946 + ... + 1158068.

It is an arithmetic number, because the mean of its divisors is an integer number (1531485120).

Almost surely, 2^38934581861 is an apocalyptic number.

It is an amenable number.

38934581861 is a deficient number, since it is larger than the sum of its proper divisors (10072941979).

38934581861 is a wasteful number, since it uses less digits than its factorization.

38934581861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34545.

The product of its digits is 4976640, while the sum is 56.

The spelling of 38934581861 in words is "thirty-eight billion, nine hundred thirty-four million, five hundred eighty-one thousand, eight hundred sixty-one".