7938874418 has 8 divisors (see below), whose sum is σ = 11912331420. Its totient is φ = 3968097280.

The previous prime is 7938874343. The next prime is 7938874429. The reversal of 7938874418 is 8144788397.

It can be written as a sum of positive squares in 2 ways, for example, as 7936493569 + 2380849 = 89087^2 + 1543^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 662543 + ... + 674418.

Almost surely, 2^7938874418 is an apocalyptic number.

7938874418 is a deficient number, since it is larger than the sum of its proper divisors (3973457002).

7938874418 is a wasteful number, since it uses less digits than its factorization.

7938874418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339932.

The product of its digits is 10838016, while the sum is 59.

The square root of 7938874418 is about 89100.3614919715. The cubic root of 7938874418 is about 1994.8931727565.

The spelling of 7938874418 in words is "seven billion, nine hundred thirty-eight million, eight hundred seventy-four thousand, four hundred eighteen".