438730190 has 32 divisors (see below), whose sum is σ = 797101344. Its totient is φ = 173859840.

The previous prime is 438730177. The next prime is 438730199. The reversal of 438730190 is 91037834.

It is a super-2 number, since 2×438730190² = 384968359234872200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 438730190.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438730199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 710762 + ... + 711378.

It is an arithmetic number, because the mean of its divisors is an integer number (24909417).

Almost surely, 2^438730190 is an apocalyptic number.

438730190 is a deficient number, since it is larger than the sum of its proper divisors (358371154).

438730190 is a wasteful number, since it uses less digits than its factorization.

438730190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 438730190 is about 20945.8871857938. The cubic root of 438730190 is about 759.8581164037.

The spelling of 438730190 in words is "four hundred thirty-eight million, seven hundred thirty thousand, one hundred ninety".