80368381 has 4 divisors (see below), whose sum is σ = 80448732. Its totient is φ = 80288032.

The previous prime is 80368373. The next prime is 80368397. The reversal of 80368381 is 18386308.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2752281 + 77616100 = 1659^2 + 8810^2 .

It is a cyclic number.

It is not a de Polignac number, because 80368381 - 2³ = 80368373 is a prime.

It is a super-2 number, since 2×80368381² = 12918153329122322, 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 80368381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80368331) 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, 38656 + ... + 40681.

It is an arithmetic number, because the mean of its divisors is an integer number (20112183).

Almost surely, 2^80368381 is an apocalyptic number.

It is an amenable number.

80368381 is a deficient number, since it is larger than the sum of its proper divisors (80351).

80368381 is a wasteful number, since it uses less digits than its factorization.

80368381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80350.

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

The square root of 80368381 is about 8964.8413817535. The cubic root of 80368381 is about 431.5473027715.

The spelling of 80368381 in words is "eighty million, three hundred sixty-eight thousand, three hundred eighty-one".