161038869 has 8 divisors (see below), whose sum is σ = 214833312. Its totient is φ = 107301840.

The previous prime is 161038849. The next prime is 161038897. The reversal of 161038869 is 968830161.

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

It is not a de Polignac number, because 161038869 - 2⁸ = 161038613 is a prime.

It is a super-2 number, since 2×161038869² = 51867034657598322, 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 161038869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161038849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7314 + ... + 19379.

It is an arithmetic number, because the mean of its divisors is an integer number (26854164).

Almost surely, 2^161038869 is an apocalyptic number.

It is an amenable number.

161038869 is a deficient number, since it is larger than the sum of its proper divisors (53794443).

161038869 is a wasteful number, since it uses less digits than its factorization.

161038869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28707.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 161038869 is about 12690.1091011859. The cubic root of 161038869 is about 544.0559579206.

The spelling of 161038869 in words is "one hundred sixty-one million, thirty-eight thousand, eight hundred sixty-nine".