161017436 has 6 divisors (see below), whose sum is σ = 281780520. Its totient is φ = 80508716.

The previous prime is 161017357. The next prime is 161017447. The reversal of 161017436 is 634710161.

It is a super-3 number, since 3×161017436³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 161017399 and 161017408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20127176 + ... + 20127183.

It is an arithmetic number, because the mean of its divisors is an integer number (46963420).

Almost surely, 2^161017436 is an apocalyptic number.

It is an amenable number.

161017436 is a deficient number, since it is larger than the sum of its proper divisors (120763084).

161017436 is a wasteful number, since it uses less digits than its factorization.

161017436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40254363 (or 40254361 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 161017436 is about 12689.2645965005. The cubic root of 161017436 is about 544.0318203345.

Adding to 161017436 its reverse (634710161), we get a palindrome (795727597).

The spelling of 161017436 in words is "one hundred sixty-one million, seventeen thousand, four hundred thirty-six".