140536218 has 8 divisors (see below), whose sum is σ = 281072448. Its totient is φ = 46845404.

The previous prime is 140536213. The next prime is 140536243. The reversal of 140536218 is 812635041.

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

140536218 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (140536211) 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, 11711346 + ... + 11711357.

It is an arithmetic number, because the mean of its divisors is an integer number (35134056).

Almost surely, 2^140536218 is an apocalyptic number.

140536218 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.

140536218 is a wasteful number, since it uses less digits than its factorization.

140536218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23422708.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 140536218 is about 11854.7972568071. The cubic root of 140536218 is about 519.9114962788.

The spelling of 140536218 in words is "one hundred forty million, five hundred thirty-six thousand, two hundred eighteen".