6418458978 has 8 divisors (see below), whose sum is σ = 12836917968. Its totient is φ = 2139486324.

The previous prime is 6418458929. The next prime is 6418458997. The reversal of 6418458978 is 8798548146.

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

6418458978 is an admirable 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, 534871576 + ... + 534871587.

It is an arithmetic number, because the mean of its divisors is an integer number (1604614746).

Almost surely, 2^6418458978 is an apocalyptic number.

6418458978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6418458978 is a wasteful number, since it uses less digits than its factorization.

6418458978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069743168.

The product of its digits is 15482880, while the sum is 60.

The square root of 6418458978 is about 80115.2855452691. The cubic root of 6418458978 is about 1858.4187989802.

The spelling of 6418458978 in words is "six billion, four hundred eighteen million, four hundred fifty-eight thousand, nine hundred seventy-eight".