80945169 has 8 divisors (see below), whose sum is σ = 109227552. Its totient is φ = 53313120.

The previous prime is 80945167. The next prime is 80945197. The reversal of 80945169 is 96154908.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80945169 - 2¹ = 80945167 is a prime.

It is a super-2 number, since 2×80945169² = 13104240768877122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 80945169.

It is not an unprimeable number, because it can be changed into a prime (80945167) 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, 162292 + ... + 162789.

It is an arithmetic number, because the mean of its divisors is an integer number (13653444).

Almost surely, 2^80945169 is an apocalyptic number.

It is an amenable number.

80945169 is a deficient number, since it is larger than the sum of its proper divisors (28282383).

80945169 is a wasteful number, since it uses less digits than its factorization.

80945169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325167.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 80945169 is about 8996.9533176515. The cubic root of 80945169 is about 432.5772194420.

The spelling of 80945169 in words is "eighty million, nine hundred forty-five thousand, one hundred sixty-nine".