30138161 has 8 divisors (see below), whose sum is σ = 33590880. Its totient is φ = 26872128.

The previous prime is 30138149. The next prime is 30138167. The reversal of 30138161 is 16183103.

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 30138161 - 2¹⁰ = 30137137 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30138167) 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, 46331 + ... + 46976.

It is an arithmetic number, because the mean of its divisors is an integer number (4198860).

Almost surely, 2^30138161 is an apocalyptic number.

It is an amenable number.

30138161 is a deficient number, since it is larger than the sum of its proper divisors (3452719).

30138161 is a wasteful number, since it uses less digits than its factorization.

30138161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93343.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 30138161 is about 5489.8234033528. The cubic root of 30138161 is about 311.1995183796.

The spelling of 30138161 in words is "thirty million, one hundred thirty-eight thousand, one hundred sixty-one".