438618730 has 32 divisors (see below), whose sum is σ = 863327808. Its totient is φ = 159120000.

The previous prime is 438618679. The next prime is 438618737. The reversal of 438618730 is 37816834.

It is not an unprimeable number, because it can be changed into a prime (438618737) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 44230 + ... + 53230.

It is an arithmetic number, because the mean of its divisors is an integer number (26978994).

Almost surely, 2^438618730 is an apocalyptic number.

438618730 is a deficient number, since it is larger than the sum of its proper divisors (424709078).

438618730 is a wasteful number, since it uses less digits than its factorization.

438618730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9462.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 438618730 is about 20943.2263512573. The cubic root of 438618730 is about 759.7937632919.

The spelling of 438618730 in words is "four hundred thirty-eight million, six hundred eighteen thousand, seven hundred thirty".