80638381 has 8 divisors (see below), whose sum is σ = 81825920. Its totient is φ = 79455168.

The previous prime is 80638351. The next prime is 80638433. The reversal of 80638381 is 18383608.

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 80638381 - 2²³ = 72249773 is a prime.

It is a super-2 number, since 2×80638381² = 13005096980602322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80638381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80638351) 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, 61525 + ... + 62821.

It is an arithmetic number, because the mean of its divisors is an integer number (10228240).

Almost surely, 2^80638381 is an apocalyptic number.

It is an amenable number.

80638381 is a deficient number, since it is larger than the sum of its proper divisors (1187539).

80638381 is a wasteful number, since it uses less digits than its factorization.

80638381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2163.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 80638381 is about 8979.8875828153. The cubic root of 80638381 is about 432.0300279910.

The spelling of 80638381 in words is "eighty million, six hundred thirty-eight thousand, three hundred eighty-one".