161793453 has 8 divisors (see below), whose sum is σ = 215988768. Its totient is φ = 107730224.

The previous prime is 161793449. The next prime is 161793487. The reversal of 161793453 is 354397161.

161793453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 161793453 - 2² = 161793449 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161793353) 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, 30126 + ... + 35087.

It is an arithmetic number, because the mean of its divisors is an integer number (26998596).

Almost surely, 2^161793453 is an apocalyptic number.

It is an amenable number.

161793453 is a deficient number, since it is larger than the sum of its proper divisors (54195315).

161793453 is an equidigital number, since it uses as much as digits as its factorization.

161793453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66043.

The product of its digits is 68040, while the sum is 39.

The square root of 161793453 is about 12719.8055409664. The cubic root of 161793453 is about 544.9043998069.

The spelling of 161793453 in words is "one hundred sixty-one million, seven hundred ninety-three thousand, four hundred fifty-three".