4257641418 has 16 divisors (see below), whose sum is σ = 8525442240. Its totient is φ = 1417520576.

The previous prime is 4257641411. The next prime is 4257641419. The reversal of 4257641418 is 8141467524.

It is a self number, because there is not a number n which added to its sum of digits gives 4257641418.

It is not an unprimeable number, because it can be changed into a prime (4257641411) 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, 417855 + ... + 427922.

It is an arithmetic number, because the mean of its divisors is an integer number (532840140).

Almost surely, 2^4257641418 is an apocalyptic number.

4257641418 is an abundant number, since it is smaller than the sum of its proper divisors (4267800822).

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

4257641418 is a wasteful number, since it uses less digits than its factorization.

4257641418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846621.

The product of its digits is 215040, while the sum is 42.

The square root of 4257641418 is about 65250.6047328299. The cubic root of 4257641418 is about 1620.7761126489.

The spelling of 4257641418 in words is "four billion, two hundred fifty-seven million, six hundred forty-one thousand, four hundred eighteen".