814426638 has 8 divisors (see below), whose sum is σ = 1628853288. Its totient is φ = 271475544.

The previous prime is 814426631. The next prime is 814426663. The reversal of 814426638 is 836624418.

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

814426638 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 814426638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (814426631) 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, 67868881 + ... + 67868892.

It is an arithmetic number, because the mean of its divisors is an integer number (203606661).

Almost surely, 2^814426638 is an apocalyptic number.

814426638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

814426638 is a wasteful number, since it uses less digits than its factorization.

814426638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135737778.

The product of its digits is 221184, while the sum is 42.

The square root of 814426638 is about 28538.1610830130. The cubic root of 814426638 is about 933.8647657450.

The spelling of 814426638 in words is "eight hundred fourteen million, four hundred twenty-six thousand, six hundred thirty-eight".