80161187 has 4 divisors (see below), whose sum is σ = 83646480. Its totient is φ = 76675896.

The previous prime is 80161163. The next prime is 80161223. The reversal of 80161187 is 78116108.

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

It is a cyclic number.

It is not a de Polignac number, because 80161187 - 2⁸ = 80160931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80161157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1742612 + ... + 1742657.

It is an arithmetic number, because the mean of its divisors is an integer number (20911620).

Almost surely, 2^80161187 is an apocalyptic number.

80161187 is a deficient number, since it is larger than the sum of its proper divisors (3485293).

80161187 is a wasteful number, since it uses less digits than its factorization.

80161187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3485292.

The product of its (nonzero) digits is 2688, while the sum is 32.

The square root of 80161187 is about 8953.2780030556. The cubic root of 80161187 is about 431.1761329200.

The spelling of 80161187 in words is "eighty million, one hundred sixty-one thousand, one hundred eighty-seven".