161824497 has 8 divisors (see below), whose sum is σ = 218986656. Its totient is φ = 106272672.

The previous prime is 161824493. The next prime is 161824541. The reversal of 161824497 is 794428161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161824497 - 2² = 161824493 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161824493) 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, 402348 + ... + 402749.

It is an arithmetic number, because the mean of its divisors is an integer number (27373332).

Almost surely, 2^161824497 is an apocalyptic number.

It is an amenable number.

161824497 is a deficient number, since it is larger than the sum of its proper divisors (57162159).

161824497 is an equidigital number, since it uses as much as digits as its factorization.

161824497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805167.

The product of its digits is 96768, while the sum is 42.

The square root of 161824497 is about 12721.0257841103. The cubic root of 161824497 is about 544.9392486220.

The spelling of 161824497 in words is "one hundred sixty-one million, eight hundred twenty-four thousand, four hundred ninety-seven".