38168610861 has 12 divisors (see below), whose sum is σ = 51297326592. Its totient is φ = 25242858144.

The previous prime is 38168610787. The next prime is 38168610911. The reversal of 38168610861 is 16801686183.

It is not a de Polignac number, because 38168610861 - 2⁹ = 38168610349 is a prime.

It is a super-2 number, since 2×38168610861² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38168610861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38168610661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3808425 + ... + 3818433.

It is an arithmetic number, because the mean of its divisors is an integer number (4274777216).

Almost surely, 2^38168610861 is an apocalyptic number.

It is an amenable number.

38168610861 is a deficient number, since it is larger than the sum of its proper divisors (13128715731).

38168610861 is an frugal number, since it uses more digits than its factorization.

38168610861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20148 (or 10139 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 48.

The spelling of 38168610861 in words is "thirty-eight billion, one hundred sixty-eight million, six hundred ten thousand, eight hundred sixty-one".