161457443 has 16 divisors (see below), whose sum is σ = 186758400. Its totient is φ = 136727136.

The previous prime is 161457427. The next prime is 161457469. The reversal of 161457443 is 344754161.

It is not a de Polignac number, because 161457443 - 2⁴ = 161457427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161457403) 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, 294896 + ... + 295442.

It is an arithmetic number, because the mean of its divisors is an integer number (11672400).

Almost surely, 2^161457443 is an apocalyptic number.

161457443 is a deficient number, since it is larger than the sum of its proper divisors (25300957).

161457443 is a wasteful number, since it uses less digits than its factorization.

161457443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986.

The product of its digits is 40320, while the sum is 35.

The square root of 161457443 is about 12706.5905340496. The cubic root of 161457443 is about 544.5269221879.

The spelling of 161457443 in words is "one hundred sixty-one million, four hundred fifty-seven thousand, four hundred forty-three".