438748505847834 has 32 divisors (see below), whose sum is σ = 1079996322088320. Its totient is φ = 115713891652032.

The previous prime is 438748505847803. The next prime is 438748505847851.

438748505847834 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (78).

It is a self number, because there is not a number n which added to its sum of digits gives 438748505847834.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 401784345469 + ... + 401784346560.

It is an arithmetic number, because the mean of its divisors is an integer number (33749885065260).

Almost surely, 2^{438748505847834} is an apocalyptic number.

438748505847834 is an abundant number, since it is smaller than the sum of its proper divisors (641247816240486).

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

438748505847834 is a wasteful number, since it uses less digits than its factorization.

438748505847834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803568692054.

The product of its (nonzero) digits is 11560550400, while the sum is 78.

The spelling of 438748505847834 in words is "four hundred thirty-eight trillion, seven hundred forty-eight billion, five hundred five million, eight hundred forty-seven thousand, eight hundred thirty-four".