161181067 has 8 divisors (see below), whose sum is σ = 162528912. Its totient is φ = 159837600.

The previous prime is 161181049. The next prime is 161181107. The reversal of 161181067 is 760181161.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161181067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161181017) 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, 147192 + ... + 148282.

It is an arithmetic number, because the mean of its divisors is an integer number (20316114).

Almost surely, 2^161181067 is an apocalyptic number.

161181067 is a deficient number, since it is larger than the sum of its proper divisors (1347845).

161181067 is a wasteful number, since it uses less digits than its factorization.

161181067 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 161181067 is about 12695.7105748359. The cubic root of 161181067 is about 544.2160453784.

The spelling of 161181067 in words is "one hundred sixty-one million, one hundred eighty-one thousand, sixty-seven".