6418778146 has 32 divisors (see below), whose sum is σ = 10661984640. Its totient is φ = 2873673600.

The previous prime is 6418778143. The next prime is 6418778221.

6418778146 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6418778093 and 6418778102.

It is not an unprimeable number, because it can be changed into a prime (6418778143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2793270 + ... + 2795566.

It is an arithmetic number, because the mean of its divisors is an integer number (333187020).

Almost surely, 2^6418778146 is an apocalyptic number.

6418778146 is a deficient number, since it is larger than the sum of its proper divisors (4243206494).

6418778146 is a wasteful number, since it uses less digits than its factorization.

6418778146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4170.

The product of its digits is 1806336, while the sum is 52.

The square root of 6418778146 is about 80117.2774499983. The cubic root of 6418778146 is about 1858.4496027387.

The spelling of 6418778146 in words is "six billion, four hundred eighteen million, seven hundred seventy-eight thousand, one hundred forty-six".