168264481 has 40 divisors (see below), whose sum is σ = 224259264. Its totient is φ = 124961760.

The previous prime is 168264479. The next prime is 168264511. The reversal of 168264481 is 184462861.

It is not a de Polignac number, because 168264481 - 2¹ = 168264479 is a prime.

It is a super-2 number, since 2×168264481² = 56625871132398722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168264581) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 607315 + ... + 607591.

Almost surely, 2^168264481 is an apocalyptic number.

168264481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

168264481 is a deficient number, since it is larger than the sum of its proper divisors (55994783).

168264481 is an equidigital number, since it uses as much as digits as its factorization.

168264481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 318 counting only the distinct ones).

The product of its digits is 73728, while the sum is 40.

The square root of 168264481 is about 12971.6799605911. The cubic root of 168264481 is about 552.0742402160.

The spelling of 168264481 in words is "one hundred sixty-eight million, two hundred sixty-four thousand, four hundred eighty-one".