457421818 has 16 divisors (see below), whose sum is σ = 784586880. Its totient is φ = 195929136.

The previous prime is 457421803. The next prime is 457421863. The reversal of 457421818 is 818124754.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20355 + ... + 36457.

It is an arithmetic number, because the mean of its divisors is an integer number (49036680).

Almost surely, 2^457421818 is an apocalyptic number.

457421818 is a deficient number, since it is larger than the sum of its proper divisors (327165062).

457421818 is a wasteful number, since it uses less digits than its factorization.

457421818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18141.

The product of its digits is 71680, while the sum is 40.

The square root of 457421818 is about 21387.4219577770. The cubic root of 457421818 is about 770.4993769684.

The spelling of 457421818 in words is "four hundred fifty-seven million, four hundred twenty-one thousand, eight hundred eighteen".