184215138 has 8 divisors (see below), whose sum is σ = 368430288. Its totient is φ = 61405044.

The previous prime is 184215133. The next prime is 184215149. The reversal of 184215138 is 831512481.

It is a sphenic number, since it is the product of 3 distinct primes.

184215138 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 184215099 and 184215108.

It is not an unprimeable number, because it can be changed into a prime (184215133) 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, 15351256 + ... + 15351267.

It is an arithmetic number, because the mean of its divisors is an integer number (46053786).

Almost surely, 2^184215138 is an apocalyptic number.

184215138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

184215138 is a wasteful number, since it uses less digits than its factorization.

184215138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30702528.

The product of its digits is 7680, while the sum is 33.

The square root of 184215138 is about 13572.5877414736. The cubic root of 184215138 is about 568.9949849396.

It can be divided in two parts, 18 and 4215138, that added together give a triangular number (4215156 = T₂₉₀₃).

The spelling of 184215138 in words is "one hundred eighty-four million, two hundred fifteen thousand, one hundred thirty-eight".