6418958578 has 16 divisors (see below), whose sum is σ = 9834635736. Its totient is φ = 3141049600.

The previous prime is 6418958573. The next prime is 6418958597. The reversal of 6418958578 is 8758598146.

It can be written as a sum of positive squares in 4 ways, for example, as 5919301969 + 499656609 = 76937^2 + 22353^2 .

It is not an unprimeable number, because it can be changed into a prime (6418958573) 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, 33001 + ... + 118012.

Almost surely, 2^6418958578 is an apocalyptic number.

6418958578 is a deficient number, since it is larger than the sum of its proper divisors (3415677158).

6418958578 is a wasteful number, since it uses less digits than its factorization.

6418958578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151469.

The product of its digits is 19353600, while the sum is 61.

The square root of 6418958578 is about 80118.4034913328. The cubic root of 6418958578 is about 1858.4670162624.

The spelling of 6418958578 in words is "six billion, four hundred eighteen million, nine hundred fifty-eight thousand, five hundred seventy-eight".