718021441 has 8 divisors (see below), whose sum is σ = 728179200. Its totient is φ = 707890560.

The previous prime is 718021427. The next prime is 718021471. The reversal of 718021441 is 144120817.

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

It is a de Polignac number, because none of the positive numbers 2^k-718021441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (718021471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50481 + ... + 63121.

It is an arithmetic number, because the mean of its divisors is an integer number (91022400).

Almost surely, 2^718021441 is an apocalyptic number.

It is an amenable number.

718021441 is a deficient number, since it is larger than the sum of its proper divisors (10157759).

718021441 is a wasteful number, since it uses less digits than its factorization.

718021441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13439.

The product of its (nonzero) digits is 1792, while the sum is 28.

The square root of 718021441 is about 26795.9220964683. The cubic root of 718021441 is about 895.4592031975.

The spelling of 718021441 in words is "seven hundred eighteen million, twenty-one thousand, four hundred forty-one".