38161861 has 8 divisors (see below), whose sum is σ = 40737600. Its totient is φ = 35642880.

The previous prime is 38161841. The next prime is 38161909. The reversal of 38161861 is 16816183.

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 38161861 - 2⁷ = 38161733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38161801) 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, 12796 + ... + 15493.

It is an arithmetic number, because the mean of its divisors is an integer number (5092200).

Almost surely, 2^38161861 is an apocalyptic number.

It is an amenable number.

38161861 is a deficient number, since it is larger than the sum of its proper divisors (2575739).

38161861 is a wasteful number, since it uses less digits than its factorization.

38161861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28379.

The product of its digits is 6912, while the sum is 34.

The square root of 38161861 is about 6177.5287130049. The cubic root of 38161861 is about 336.6742090044.

The spelling of 38161861 in words is "thirty-eight million, one hundred sixty-one thousand, eight hundred sixty-one".