166841453 has 2 divisors, whose sum is σ = 166841454. Its totient is φ = 166841452.

The previous prime is 166841431. The next prime is 166841459. The reversal of 166841453 is 354148661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107889769 + 58951684 = 10387^2 + 7678^2 .

It is a cyclic number.

It is not a de Polignac number, because 166841453 - 2²⁴ = 150064237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166841459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83420726 + 83420727.

It is an arithmetic number, because the mean of its divisors is an integer number (83420727).

Almost surely, 2^166841453 is an apocalyptic number.

It is an amenable number.

166841453 is a deficient number, since it is larger than the sum of its proper divisors (1).

166841453 is an equidigital number, since it uses as much as digits as its factorization.

166841453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 38.

The square root of 166841453 is about 12916.7121590597. The cubic root of 166841453 is about 550.5135181907.

The spelling of 166841453 in words is "one hundred sixty-six million, eight hundred forty-one thousand, four hundred fifty-three".