168157453 has 2 divisors, whose sum is σ = 168157454. Its totient is φ = 168157452.

The previous prime is 168157417. The next prime is 168157459. The reversal of 168157453 is 354751861.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111576969 + 56580484 = 10563^2 + 7522^2 .

It is a cyclic number.

It is not a de Polignac number, because 168157453 - 2¹⁷ = 168026381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168157459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84078726 + 84078727.

It is an arithmetic number, because the mean of its divisors is an integer number (84078727).

Almost surely, 2^168157453 is an apocalyptic number.

It is an amenable number.

168157453 is a deficient number, since it is larger than the sum of its proper divisors (1).

168157453 is an equidigital number, since it uses as much as digits as its factorization.

168157453 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 100800, while the sum is 40.

The square root of 168157453 is about 12967.5538556815. The cubic root of 168157453 is about 551.9571627561.

The spelling of 168157453 in words is "one hundred sixty-eight million, one hundred fifty-seven thousand, four hundred fifty-three".