718218642 has 8 divisors (see below), whose sum is σ = 1436437296. Its totient is φ = 239406212.

The previous prime is 718218629. The next prime is 718218643. The reversal of 718218642 is 246812817.

It is a happy number.

718218642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

718218642 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 718218642.

It is not an unprimeable number, because it can be changed into a prime (718218643) 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, 59851548 + ... + 59851559.

It is an arithmetic number, because the mean of its divisors is an integer number (179554662).

Almost surely, 2^718218642 is an apocalyptic number.

718218642 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.

718218642 is a wasteful number, since it uses less digits than its factorization.

718218642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119703112.

The product of its digits is 43008, while the sum is 39.

The square root of 718218642 is about 26799.6015268884. The cubic root of 718218642 is about 895.5411734918.

The spelling of 718218642 in words is "seven hundred eighteen million, two hundred eighteen thousand, six hundred forty-two".