161118453 has 8 divisors (see below), whose sum is σ = 214900000. Its totient is φ = 107374608.

The previous prime is 161118431. The next prime is 161118457. The reversal of 161118453 is 354811161.

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

It is not a de Polignac number, because 161118453 - 2⁶ = 161118389 is a prime.

It is a super-2 number, since 2×161118453² = 51918311794226418, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 161118453.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161118457) 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, 2823 + ... + 18171.

It is an arithmetic number, because the mean of its divisors is an integer number (26862500).

Almost surely, 2^161118453 is an apocalyptic number.

It is an amenable number.

161118453 is a deficient number, since it is larger than the sum of its proper divisors (53781547).

161118453 is a wasteful number, since it uses less digits than its factorization.

161118453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18851.

The product of its digits is 2880, while the sum is 30.

The square root of 161118453 is about 12693.2443843172. The cubic root of 161118453 is about 544.1455657257.

The spelling of 161118453 in words is "one hundred sixty-one million, one hundred eighteen thousand, four hundred fifty-three".