438187012 has 24 divisors (see below), whose sum is σ = 772934400. Its totient is φ = 217356576.

The previous prime is 438187003. The next prime is 438187021. The reversal of 438187012 is 210781834.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (438187003) and next prime (438187021).

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303789 + ... + 305227.

It is an arithmetic number, because the mean of its divisors is an integer number (32205600).

Almost surely, 2^438187012 is an apocalyptic number.

It is an amenable number.

438187012 is a deficient number, since it is larger than the sum of its proper divisors (334747388).

438187012 is a wasteful number, since it uses less digits than its factorization.

438187012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995 (or 1993 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 438187012 is about 20932.9169491497. The cubic root of 438187012 is about 759.5444014513.

The spelling of 438187012 in words is "four hundred thirty-eight million, one hundred eighty-seven thousand, twelve".