161733485 has 4 divisors (see below), whose sum is σ = 194080188. Its totient is φ = 129386784.

The previous prime is 161733463. The next prime is 161733487. The reversal of 161733485 is 584337161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39100009 + 122633476 = 6253^2 + 11074^2 .

It is a cyclic number.

It is not a de Polignac number, because 161733485 - 2¹² = 161729389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161733487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16173344 + ... + 16173353.

It is an arithmetic number, because the mean of its divisors is an integer number (48520047).

Almost surely, 2^161733485 is an apocalyptic number.

It is an amenable number.

161733485 is a deficient number, since it is larger than the sum of its proper divisors (32346703).

161733485 is an equidigital number, since it uses as much as digits as its factorization.

161733485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32346702.

The product of its digits is 60480, while the sum is 38.

The square root of 161733485 is about 12717.4480537567. The cubic root of 161733485 is about 544.8370693836.

The spelling of 161733485 in words is "one hundred sixty-one million, seven hundred thirty-three thousand, four hundred eighty-five".