6428572418 has 4 divisors (see below), whose sum is σ = 9642858630. Its totient is φ = 3214286208.

The previous prime is 6428572399. The next prime is 6428572441. The reversal of 6428572418 is 8142758246.

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., 3716975089 + 2711597329 = 60967^2 + 52073^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1607143103 + ... + 1607143106.

Almost surely, 2^6428572418 is an apocalyptic number.

6428572418 is a deficient number, since it is larger than the sum of its proper divisors (3214286212).

6428572418 is a wasteful number, since it uses less digits than its factorization.

6428572418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3214286211.

The product of its digits is 860160, while the sum is 47.

The square root of 6428572418 is about 80178.3787438983. The cubic root of 6428572418 is about 1859.3943781171.

The spelling of 6428572418 in words is "six billion, four hundred twenty-eight million, five hundred seventy-two thousand, four hundred eighteen".