161768433 has 8 divisors (see below), whose sum is σ = 215782528. Its totient is φ = 107799984.

The previous prime is 161768423. The next prime is 161768441. The reversal of 161768433 is 334867161.

161768433 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161768433 - 2⁴ = 161768417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161768391 and 161768400.

It is not an unprimeable number, because it can be changed into a prime (161768423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2041 + ... + 18102.

It is an arithmetic number, because the mean of its divisors is an integer number (26972816).

Almost surely, 2^161768433 is an apocalyptic number.

It is an amenable number.

161768433 is a deficient number, since it is larger than the sum of its proper divisors (54014095).

161768433 is a wasteful number, since it uses less digits than its factorization.

161768433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22823.

The product of its digits is 72576, while the sum is 39.

The square root of 161768433 is about 12718.8219973392. The cubic root of 161768433 is about 544.8763100611.

The spelling of 161768433 in words is "one hundred sixty-one million, seven hundred sixty-eight thousand, four hundred thirty-three".