140813218 has 64 divisors (see below), whose sum is σ = 280304640. Its totient is φ = 51492672.

The previous prime is 140813213. The next prime is 140813249. The reversal of 140813218 is 812318041.

It is not an unprimeable number, because it can be changed into a prime (140813213) 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 31 ways as a sum of consecutive naturals, for example, 148221 + ... + 149167.

It is an arithmetic number, because the mean of its divisors is an integer number (4379760).

Almost surely, 2^140813218 is an apocalyptic number.

140813218 is a deficient number, since it is larger than the sum of its proper divisors (139491422).

140813218 is a wasteful number, since it uses less digits than its factorization.

140813218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1031.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 140813218 is about 11866.4745396432. The cubic root of 140813218 is about 520.2528577934.

The spelling of 140813218 in words is "one hundred forty million, eight hundred thirteen thousand, two hundred eighteen".