161741707 has 4 divisors (see below), whose sum is σ = 161845720. Its totient is φ = 161637696.

The previous prime is 161741693. The next prime is 161741719. The reversal of 161741707 is 707147161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 161741707 - 2⁷ = 161741579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161745707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49638 + ... + 52795.

It is an arithmetic number, because the mean of its divisors is an integer number (40461430).

Almost surely, 2^161741707 is an apocalyptic number.

161741707 is a deficient number, since it is larger than the sum of its proper divisors (104013).

161741707 is a wasteful number, since it uses less digits than its factorization.

161741707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104012.

The product of its (nonzero) digits is 8232, while the sum is 34.

The square root of 161741707 is about 12717.7713063256. The cubic root of 161741707 is about 544.8463018038.

Adding to 161741707 its reverse (707147161), we get a palindrome (868888868).

The spelling of 161741707 in words is "one hundred sixty-one million, seven hundred forty-one thousand, seven hundred seven".