168453081 has 16 divisors (see below), whose sum is σ = 260411520. Its totient is φ = 107418960.

The previous prime is 168453079. The next prime is 168453091. The reversal of 168453081 is 180354861.

It is not a de Polignac number, because 168453081 - 2¹ = 168453079 is a prime.

It is a super-2 number, since 2×168453081² = 56752880996785122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (168453001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135010 + ... + 136251.

It is an arithmetic number, because the mean of its divisors is an integer number (16275720).

Almost surely, 2^168453081 is an apocalyptic number.

It is an amenable number.

168453081 is a deficient number, since it is larger than the sum of its proper divisors (91958439).

168453081 is a wasteful number, since it uses less digits than its factorization.

168453081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271293 (or 271287 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 168453081 is about 12978.9476075682. The cubic root of 168453081 is about 552.2804281644.

The spelling of 168453081 in words is "one hundred sixty-eight million, four hundred fifty-three thousand, eighty-one".