438314681 has 4 divisors (see below), whose sum is σ = 500931072. Its totient is φ = 375698292.

The previous prime is 438314663. The next prime is 438314687. The reversal of 438314681 is 186413834.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 438314681 - 2²⁶ = 371205817 is a prime.

It is a super-2 number, since 2×438314681² = 384239519160263522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (438314687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31308185 + ... + 31308198.

It is an arithmetic number, because the mean of its divisors is an integer number (125232768).

Almost surely, 2^438314681 is an apocalyptic number.

It is an amenable number.

438314681 is a deficient number, since it is larger than the sum of its proper divisors (62616391).

438314681 is an equidigital number, since it uses as much as digits as its factorization.

438314681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62616390.

The product of its digits is 55296, while the sum is 38.

The square root of 438314681 is about 20935.9662065069. The cubic root of 438314681 is about 759.6181605659.

The spelling of 438314681 in words is "four hundred thirty-eight million, three hundred fourteen thousand, six hundred eighty-one".