161652343 has 4 divisors (see below), whose sum is σ = 163318960. Its totient is φ = 159985728.

The previous prime is 161652329. The next prime is 161652347. The reversal of 161652343 is 343256161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 343256161 = 521 ⋅658841.

It is a cyclic number.

It is not a de Polignac number, because 161652343 - 2⁵ = 161652311 is a prime.

It is a super-2 number, since 2×161652343² = 52262959994779298, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161652347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 833163 + ... + 833356.

It is an arithmetic number, because the mean of its divisors is an integer number (40829740).

Almost surely, 2^161652343 is an apocalyptic number.

161652343 is a deficient number, since it is larger than the sum of its proper divisors (1666617).

161652343 is an equidigital number, since it uses as much as digits as its factorization.

161652343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666616.

The product of its digits is 12960, while the sum is 31.

The square root of 161652343 is about 12714.2574694710. The cubic root of 161652343 is about 544.7459388738.

The spelling of 161652343 in words is "one hundred sixty-one million, six hundred fifty-two thousand, three hundred forty-three".