80181389 has 8 divisors (see below), whose sum is σ = 83232768. Its totient is φ = 77186160.

The previous prime is 80181377. The next prime is 80181391. The reversal of 80181389 is 98318108.

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 80181389 - 2⁸ = 80181133 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 (80181319) 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, 11117 + ... + 16850.

It is an arithmetic number, because the mean of its divisors is an integer number (10404096).

Almost surely, 2^80181389 is an apocalyptic number.

It is an amenable number.

80181389 is a deficient number, since it is larger than the sum of its proper divisors (3051379).

80181389 is a wasteful number, since it uses less digits than its factorization.

80181389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28075.

The product of its (nonzero) digits is 13824, while the sum is 38.

The square root of 80181389 is about 8954.4061221278. The cubic root of 80181389 is about 431.2123511486.

The spelling of 80181389 in words is "eighty million, one hundred eighty-one thousand, three hundred eighty-nine".