161198013 has 16 divisors (see below), whose sum is σ = 220340736. Its totient is φ = 104769840.

The previous prime is 161197997. The next prime is 161198041. The reversal of 161198013 is 310891161.

It is not a de Polignac number, because 161198013 - 2⁴ = 161197997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161198083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105928 + ... + 107438.

It is an arithmetic number, because the mean of its divisors is an integer number (13771296).

Almost surely, 2^161198013 is an apocalyptic number.

It is an amenable number.

161198013 is a deficient number, since it is larger than the sum of its proper divisors (59142723).

161198013 is a wasteful number, since it uses less digits than its factorization.

161198013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2384.

The product of its (nonzero) digits is 1296, while the sum is 30.

The square root of 161198013 is about 12696.3779480606. The cubic root of 161198013 is about 544.2351170186.

The spelling of 161198013 in words is "one hundred sixty-one million, one hundred ninety-eight thousand, thirteen".