161803353 has 8 divisors (see below), whose sum is σ = 222697216. Its totient is φ = 104389200.

The previous prime is 161803339. The next prime is 161803361. The reversal of 161803353 is 353308161.

161803353 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 161803353 - 2⁴ = 161803337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161803353.

It is not an unprimeable number, because it can be changed into a prime (161803363) 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, 869818 + ... + 870003.

It is an arithmetic number, because the mean of its divisors is an integer number (27837152).

Almost surely, 2^161803353 is an apocalyptic number.

It is an amenable number.

161803353 is a deficient number, since it is larger than the sum of its proper divisors (60893863).

161803353 is a wasteful number, since it uses less digits than its factorization.

161803353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739855.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 161803353 is about 12720.1946919063. The cubic root of 161803353 is about 544.9155136549.

The spelling of 161803353 in words is "one hundred sixty-one million, eight hundred three thousand, three hundred fifty-three".