420313618 has 8 divisors (see below), whose sum is σ = 632714940. Its totient is φ = 209408640.

The previous prime is 420313609. The next prime is 420313643. The reversal of 420313618 is 816313024.

It can be written as a sum of positive squares in 2 ways, for example, as 384277609 + 36036009 = 19603^2 + 6003^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373383 + ... + 374506.

Almost surely, 2^420313618 is an apocalyptic number.

420313618 is a deficient number, since it is larger than the sum of its proper divisors (212401322).

420313618 is a wasteful number, since it uses less digits than its factorization.

420313618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748172.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 420313618 is about 20501.5515998180. The cubic root of 420313618 is about 749.0735927566.

The spelling of 420313618 in words is "four hundred twenty million, three hundred thirteen thousand, six hundred eighteen".