438494161 has 16 divisors (see below), whose sum is σ = 518307840. Its totient is φ = 363177360.

The previous prime is 438494159. The next prime is 438494191. The reversal of 438494161 is 161494834.

It is not a de Polignac number, because 438494161 - 2¹ = 438494159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438494191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17556 + ... + 34426.

It is an arithmetic number, because the mean of its divisors is an integer number (32394240).

Almost surely, 2^438494161 is an apocalyptic number.

It is an amenable number.

438494161 is a deficient number, since it is larger than the sum of its proper divisors (79813679).

438494161 is a wasteful number, since it uses less digits than its factorization.

438494161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17004.

The product of its digits is 82944, while the sum is 40.

The square root of 438494161 is about 20940.2521713565. The cubic root of 438494161 is about 759.7218285992.

The spelling of 438494161 in words is "four hundred thirty-eight million, four hundred ninety-four thousand, one hundred sixty-one".