161334330 has 32 divisors (see below), whose sum is σ = 388196928. Its totient is φ = 42912000.

The previous prime is 161334287. The next prime is 161334331. The reversal of 161334330 is 33433161.

161334330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 161334330.

It is not an unprimeable number, because it can be changed into a prime (161334331) 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, 5325 + ... + 18735.

It is an arithmetic number, because the mean of its divisors is an integer number (12131154).

Almost surely, 2^161334330 is an apocalyptic number.

161334330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161334330 is an abundant number, since it is smaller than the sum of its proper divisors (226862598).

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

161334330 is a wasteful number, since it uses less digits than its factorization.

161334330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13822.

The product of its (nonzero) digits is 1944, while the sum is 24.

The square root of 161334330 is about 12701.7451556863. The cubic root of 161334330 is about 544.3884844917.

Adding to 161334330 its reverse (33433161), we get a palindrome (194767491).

The spelling of 161334330 in words is "one hundred sixty-one million, three hundred thirty-four thousand, three hundred thirty".