185140146 has 8 divisors (see below), whose sum is σ = 370280304. Its totient is φ = 61713380.

The previous prime is 185140141. The next prime is 185140181. The reversal of 185140146 is 641041581.

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

185140146 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (185140141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15428340 + ... + 15428351.

It is an arithmetic number, because the mean of its divisors is an integer number (46285038).

Almost surely, 2^185140146 is an apocalyptic number.

185140146 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.

185140146 is a wasteful number, since it uses less digits than its factorization.

185140146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30856696.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 185140146 is about 13606.6214028318. The cubic root of 185140146 is about 569.9457689248.

The spelling of 185140146 in words is "one hundred eighty-five million, one hundred forty thousand, one hundred forty-six".