161040346 has 4 divisors (see below), whose sum is σ = 241560522. Its totient is φ = 80520172.

The previous prime is 161040343. The next prime is 161040361. The reversal of 161040346 is 643040161.

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

It can be written as a sum of positive squares in only one way, i.e., 112890625 + 48149721 = 10625^2 + 6939^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 161040346.

It is not an unprimeable number, because it can be changed into a prime (161040343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40260085 + ... + 40260088.

Almost surely, 2^161040346 is an apocalyptic number.

161040346 is a deficient number, since it is larger than the sum of its proper divisors (80520176).

161040346 is an equidigital number, since it uses as much as digits as its factorization.

161040346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80520175.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 161040346 is about 12690.1672959816. The cubic root of 161040346 is about 544.0576212213.

The spelling of 161040346 in words is "one hundred sixty-one million, forty thousand, three hundred forty-six".