438157460481 has 32 divisors (see below), whose sum is σ = 635435324160. Its totient is φ = 266942767104.

The previous prime is 438157460443. The next prime is 438157460491. The reversal of 438157460481 is 184064751834.

It is not a de Polignac number, because 438157460481 - 2¹⁰ = 438157459457 is a prime.

It is a super-2 number, since 2×438157460481² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (438157460491) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 16572985 + ... + 16599401.

It is an arithmetic number, because the mean of its divisors is an integer number (19857353880).

Almost surely, 2^438157460481 is an apocalyptic number.

It is an amenable number.

438157460481 is a deficient number, since it is larger than the sum of its proper divisors (197277863679).

438157460481 is a wasteful number, since it uses less digits than its factorization.

438157460481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30665.

The product of its (nonzero) digits is 2580480, while the sum is 51.

The spelling of 438157460481 in words is "four hundred thirty-eight billion, one hundred fifty-seven million, four hundred sixty thousand, four hundred eighty-one".