161719413 has 16 divisors (see below), whose sum is σ = 219840000. Its totient is φ = 105715440.

The previous prime is 161719403. The next prime is 161719421. The reversal of 161719413 is 314917161.

161719413 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 161719413 - 2⁵ = 161719381 is a prime.

It is a super-3 number, since 3×161719413³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161719403) 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, 87408 + ... + 89238.

It is an arithmetic number, because the mean of its divisors is an integer number (13740000).

Almost surely, 2^161719413 is an apocalyptic number.

It is an amenable number.

161719413 is a deficient number, since it is larger than the sum of its proper divisors (58120587).

161719413 is a wasteful number, since it uses less digits than its factorization.

161719413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392.

The product of its digits is 4536, while the sum is 33.

The square root of 161719413 is about 12716.8947860710. The cubic root of 161719413 is about 544.8212673176.

The spelling of 161719413 in words is "one hundred sixty-one million, seven hundred nineteen thousand, four hundred thirteen".