5278250018 has 4 divisors (see below), whose sum is σ = 7917375030. Its totient is φ = 2639125008.

The previous prime is 5278250011. The next prime is 5278250057. The reversal of 5278250018 is 8100528725.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5208075889 + 70174129 = 72167^2 + 8377^2 .

It is not an unprimeable number, because it can be changed into a prime (5278250011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1319562503 + ... + 1319562506.

Almost surely, 2^5278250018 is an apocalyptic number.

5278250018 is a deficient number, since it is larger than the sum of its proper divisors (2639125012).

5278250018 is a wasteful number, since it uses less digits than its factorization.

5278250018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2639125011.

The product of its (nonzero) digits is 44800, while the sum is 38.

The square root of 5278250018 is about 72651.5658330913. The cubic root of 5278250018 is about 1741.1251385460.

The spelling of 5278250018 in words is "five billion, two hundred seventy-eight million, two hundred fifty thousand, eighteen".