38180161 has 4 divisors (see below), whose sum is σ = 39840192. Its totient is φ = 36520132.

The previous prime is 38180159. The next prime is 38180171. The reversal of 38180161 is 16108183.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 38180161 - 2¹ = 38180159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38180141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 829981 + ... + 830026.

It is an arithmetic number, because the mean of its divisors is an integer number (9960048).

Almost surely, 2^38180161 is an apocalyptic number.

It is an amenable number.

38180161 is a deficient number, since it is larger than the sum of its proper divisors (1660031).

38180161 is a wasteful number, since it uses less digits than its factorization.

38180161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660030.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 38180161 is about 6179.0097103015. The cubic root of 38180161 is about 336.7280162463.

The spelling of 38180161 in words is "thirty-eight million, one hundred eighty thousand, one hundred sixty-one".