161730955 has 16 divisors (see below), whose sum is σ = 199371744. Its totient is φ = 125879040.

The previous prime is 161730949. The next prime is 161731001. The reversal of 161730955 is 559037161.

161730955 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161730955 - 2¹¹ = 161728907 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59077 + ... + 61753.

It is an arithmetic number, because the mean of its divisors is an integer number (12460734).

Almost surely, 2^161730955 is an apocalyptic number.

161730955 is a deficient number, since it is larger than the sum of its proper divisors (37640789).

161730955 is a wasteful number, since it uses less digits than its factorization.

161730955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3006.

The product of its (nonzero) digits is 28350, while the sum is 37.

The square root of 161730955 is about 12717.3485837261. The cubic root of 161730955 is about 544.8342284032.

The spelling of 161730955 in words is "one hundred sixty-one million, seven hundred thirty thousand, nine hundred fifty-five".