161004135 has 8 divisors (see below), whose sum is σ = 257606640. Its totient is φ = 85868864.

The previous prime is 161004113. The next prime is 161004139. The reversal of 161004135 is 531400161.

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

It is a cyclic number.

It is not a de Polignac number, because 161004135 - 2⁸ = 161003879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161004139) 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, 5366790 + ... + 5366819.

It is an arithmetic number, because the mean of its divisors is an integer number (32200830).

Almost surely, 2^161004135 is an apocalyptic number.

161004135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161004135 is a deficient number, since it is larger than the sum of its proper divisors (96602505).

161004135 is a wasteful number, since it uses less digits than its factorization.

161004135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10733617.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 161004135 is about 12688.7404812298. The cubic root of 161004135 is about 544.0168398316.

Adding to 161004135 its reverse (531400161), we get a palindrome (692404296).

The spelling of 161004135 in words is "one hundred sixty-one million, four thousand, one hundred thirty-five".