161708135 has 8 divisors (see below), whose sum is σ = 194380560. Its totient is φ = 129145984.

The previous prime is 161708119. The next prime is 161708161. The reversal of 161708135 is 531807161.

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

It is a cyclic number.

It is not a de Polignac number, because 161708135 - 2⁴ = 161708119 is a prime.

It is a super-2 number, since 2×161708135² = 52299041850356450, which contains 22 as substring.

It is a congruent number.

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, 24305 + ... + 30234.

It is an arithmetic number, because the mean of its divisors is an integer number (24297570).

Almost surely, 2^161708135 is an apocalyptic number.

161708135 is a deficient number, since it is larger than the sum of its proper divisors (32672425).

161708135 is an equidigital number, since it uses as much as digits as its factorization.

161708135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55137.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 161708135 is about 12716.4513524804. The cubic root of 161708135 is about 544.8086020950.

The spelling of 161708135 in words is "one hundred sixty-one million, seven hundred eight thousand, one hundred thirty-five".