161098453 has 4 divisors (see below), whose sum is σ = 161235360. Its totient is φ = 160961548.

The previous prime is 161098411. The next prime is 161098501. The reversal of 161098453 is 354890161.

161098453 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 354890161 = 23 ⋅15430007.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161098453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161095453) 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, 66673 + ... + 69046.

It is an arithmetic number, because the mean of its divisors is an integer number (40308840).

Almost surely, 2^161098453 is an apocalyptic number.

It is an amenable number.

161098453 is a deficient number, since it is larger than the sum of its proper divisors (136907).

161098453 is a wasteful number, since it uses less digits than its factorization.

161098453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136906.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 161098453 is about 12692.4565392205. The cubic root of 161098453 is about 544.1230494519.

The spelling of 161098453 in words is "one hundred sixty-one million, ninety-eight thousand, four hundred fifty-three".