438523613 has 8 divisors (see below), whose sum is σ = 493821696. Its totient is φ = 385797600.

The previous prime is 438523597. The next prime is 438523651. The reversal of 438523613 is 316325834.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 438523613 - 2⁴ = 438523597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438523663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 642656 + ... + 643337.

It is an arithmetic number, because the mean of its divisors is an integer number (61727712).

Almost surely, 2^438523613 is an apocalyptic number.

It is an amenable number.

438523613 is a deficient number, since it is larger than the sum of its proper divisors (55298083).

438523613 is a wasteful number, since it uses less digits than its factorization.

438523613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286035.

The product of its digits is 51840, while the sum is 35.

The square root of 438523613 is about 20940.9553984531. The cubic root of 438523613 is about 759.7388374356.

The spelling of 438523613 in words is "four hundred thirty-eight million, five hundred twenty-three thousand, six hundred thirteen".