161383533 has 16 divisors (see below), whose sum is σ = 228513600. Its totient is φ = 100958976.

The previous prime is 161383531. The next prime is 161383543. The reversal of 161383533 is 335383161.

161383533 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 161383533 - 2¹ = 161383531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161383494 and 161383503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161383531) 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, 13266 + ... + 22332.

It is an arithmetic number, because the mean of its divisors is an integer number (14282100).

Almost surely, 2^161383533 is an apocalyptic number.

It is an amenable number.

161383533 is a deficient number, since it is larger than the sum of its proper divisors (67130067).

161383533 is a wasteful number, since it uses less digits than its factorization.

161383533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9436.

The product of its digits is 19440, while the sum is 33.

The square root of 161383533 is about 12703.6818678681. The cubic root of 161383533 is about 544.4438205632.

The spelling of 161383533 in words is "one hundred sixty-one million, three hundred eighty-three thousand, five hundred thirty-three".