140391418 has 8 divisors (see below), whose sum is σ = 221670720. Its totient is φ = 66501180.

The previous prime is 140391413. The next prime is 140391451. The reversal of 140391418 is 814193041.

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

It is a self number, because there is not a number n which added to its sum of digits gives 140391418.

It is not an unprimeable number, because it can be changed into a prime (140391413) 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, 1847218 + ... + 1847293.

It is an arithmetic number, because the mean of its divisors is an integer number (27708840).

Almost surely, 2^140391418 is an apocalyptic number.

140391418 is a deficient number, since it is larger than the sum of its proper divisors (81279302).

140391418 is a wasteful number, since it uses less digits than its factorization.

140391418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3694532.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 140391418 is about 11848.6884506261. The cubic root of 140391418 is about 519.7328731540.

The spelling of 140391418 in words is "one hundred forty million, three hundred ninety-one thousand, four hundred eighteen".