718242388 has 12 divisors (see below), whose sum is σ = 1257457012. Its totient is φ = 358968960.

The previous prime is 718242383. The next prime is 718242407. The reversal of 718242388 is 883242817.

It can be written as a sum of positive squares in 2 ways, for example, as 386201104 + 332041284 = 19652^2 + 18222^2 .

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (718242383) 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, 27093 + ... + 46588.

Almost surely, 2^718242388 is an apocalyptic number.

It is an amenable number.

718242388 is a deficient number, since it is larger than the sum of its proper divisors (539214624).

718242388 is a wasteful number, since it uses less digits than its factorization.

718242388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76122 (or 76120 counting only the distinct ones).

The product of its digits is 172032, while the sum is 43.

The square root of 718242388 is about 26800.0445522018. The cubic root of 718242388 is about 895.5510429499.

The spelling of 718242388 in words is "seven hundred eighteen million, two hundred forty-two thousand, three hundred eighty-eight".