161708837 has 8 divisors (see below), whose sum is σ = 169097856. Its totient is φ = 154349712.

The previous prime is 161708761. The next prime is 161708857. The reversal of 161708837 is 738807161.

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 161708837 - 2⁸ = 161708581 is a prime.

It is a super-2 number, since 2×161708837² = 52299495927785138, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161708794 and 161708803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161708857) 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, 3983 + ... + 18419.

It is an arithmetic number, because the mean of its divisors is an integer number (21137232).

Almost surely, 2^161708837 is an apocalyptic number.

It is an amenable number.

161708837 is a deficient number, since it is larger than the sum of its proper divisors (7389019).

161708837 is a wasteful number, since it uses less digits than its factorization.

161708837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14947.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 161708837 is about 12716.4789544905. The cubic root of 161708837 is about 544.8093904600.

The spelling of 161708837 in words is "one hundred sixty-one million, seven hundred eight thousand, eight hundred thirty-seven".