169813453 has 2 divisors, whose sum is σ = 169813454. Its totient is φ = 169813452.

The previous prime is 169813417. The next prime is 169813471. The reversal of 169813453 is 354318961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143568324 + 26245129 = 11982^2 + 5123^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-169813453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (169813253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84906726 + 84906727.

It is an arithmetic number, because the mean of its divisors is an integer number (84906727).

Almost surely, 2^169813453 is an apocalyptic number.

It is an amenable number.

169813453 is a deficient number, since it is larger than the sum of its proper divisors (1).

169813453 is an equidigital number, since it uses as much as digits as its factorization.

169813453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 40.

The square root of 169813453 is about 13031.2490959232. The cubic root of 169813453 is about 553.7631227623.

It can be divided in two parts, 1698 and 13453, that added together give a palindrome (15151).

The spelling of 169813453 in words is "one hundred sixty-nine million, eight hundred thirteen thousand, four hundred fifty-three".