161713398 has 32 divisors (see below), whose sum is σ = 403234560. Its totient is φ = 42003360.

The previous prime is 161713393. The next prime is 161713457. The reversal of 161713398 is 893317161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161713393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174553 + ... + 175476.

It is an arithmetic number, because the mean of its divisors is an integer number (12601080).

Almost surely, 2^161713398 is an apocalyptic number.

161713398 is an abundant number, since it is smaller than the sum of its proper divisors (241521162).

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

161713398 is a wasteful number, since it uses less digits than its factorization.

161713398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350052.

The product of its digits is 27216, while the sum is 39.

The square root of 161713398 is about 12716.6582874590. The cubic root of 161713398 is about 544.8145125306.

The spelling of 161713398 in words is "one hundred sixty-one million, seven hundred thirteen thousand, three hundred ninety-eight".