161036635 has 8 divisors (see below), whose sum is σ = 194766336. Its totient is φ = 127814400.

The previous prime is 161036611. The next prime is 161036653. The reversal of 161036635 is 536630161.

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

It is not a de Polignac number, because 161036635 - 2⁹ = 161036123 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161036597 and 161036606.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126166 + ... + 127435.

It is an arithmetic number, because the mean of its divisors is an integer number (24345792).

Almost surely, 2^161036635 is an apocalyptic number.

161036635 is a deficient number, since it is larger than the sum of its proper divisors (33729701).

161036635 is a wasteful number, since it uses less digits than its factorization.

161036635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253733.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 161036635 is about 12690.0210795727. The cubic root of 161036635 is about 544.0534421167.

Adding to 161036635 its reverse (536630161), we get a palindrome (697666796).

The spelling of 161036635 in words is "one hundred sixty-one million, thirty-six thousand, six hundred thirty-five".