438154494 has 32 divisors (see below), whose sum is σ = 886871040. Its totient is φ = 144299232.

The previous prime is 438154433. The next prime is 438154513. The reversal of 438154494 is 494451834.

It is a super-2 number, since 2×438154494² = 383958721224792072, which contains 22 as substring.

It is a congruent number.

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, 302079 + ... + 303525.

It is an arithmetic number, because the mean of its divisors is an integer number (27714720).

Almost surely, 2^438154494 is an apocalyptic number.

438154494 is an abundant number, since it is smaller than the sum of its proper divisors (448716546).

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

438154494 is a wasteful number, since it uses less digits than its factorization.

438154494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2024.

The product of its digits is 276480, while the sum is 42.

The square root of 438154494 is about 20932.1402154677. The cubic root of 438154494 is about 759.5256123079.

The spelling of 438154494 in words is "four hundred thirty-eight million, one hundred fifty-four thousand, four hundred ninety-four".