438354387340 has 24 divisors (see below), whose sum is σ = 921214733040. Its totient is φ = 175214036928.

The previous prime is 438354387337. The next prime is 438354387353. The reversal of 438354387340 is 43783453834.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7954230 + ... + 8009149.

It is an arithmetic number, because the mean of its divisors is an integer number (38383947210).

Almost surely, 2^438354387340 is an apocalyptic number.

It is an amenable number.

438354387340 is an abundant number, since it is smaller than the sum of its proper divisors (482860345700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

438354387340 is a wasteful number, since it uses less digits than its factorization.

438354387340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15964761 (or 15964759 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 52.

The spelling of 438354387340 in words is "four hundred thirty-eight billion, three hundred fifty-four million, three hundred eighty-seven thousand, three hundred forty".