81160367 has 4 divisors (see below), whose sum is σ = 81244416. Its totient is φ = 81076320.

The previous prime is 81160349. The next prime is 81160369. The reversal of 81160367 is 76306118.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81160367 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 (81160369) 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, 40559 + ... + 42512.

It is an arithmetic number, because the mean of its divisors is an integer number (20311104).

Almost surely, 2^81160367 is an apocalyptic number.

81160367 is a deficient number, since it is larger than the sum of its proper divisors (84049).

81160367 is an equidigital number, since it uses as much as digits as its factorization.

81160367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84048.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 81160367 is about 9008.9048724026. The cubic root of 81160367 is about 432.9602251243.

The spelling of 81160367 in words is "eighty-one million, one hundred sixty thousand, three hundred sixty-seven".