161197116 has 12 divisors (see below), whose sum is σ = 376126632. Its totient is φ = 53732368.

The previous prime is 161197093. The next prime is 161197139. The reversal of 161197116 is 611791161.

It is an interprime number because it is at equal distance from previous prime (161197093) and next prime (161197139).

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6716535 + ... + 6716558.

It is an arithmetic number, because the mean of its divisors is an integer number (31343886).

Almost surely, 2^161197116 is an apocalyptic number.

It is an amenable number.

161197116 is an abundant number, since it is smaller than the sum of its proper divisors (214929516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161197116 is a wasteful number, since it uses less digits than its factorization.

161197116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13433100 (or 13433098 counting only the distinct ones).

The product of its digits is 2268, while the sum is 33.

The square root of 161197116 is about 12696.3426229761. The cubic root of 161197116 is about 544.2341075359.

The spelling of 161197116 in words is "one hundred sixty-one million, one hundred ninety-seven thousand, one hundred sixteen".