168909427 has 8 divisors (see below), whose sum is σ = 177600240. Its totient is φ = 160409760.

The previous prime is 168909361. The next prime is 168909431. The reversal of 168909427 is 724909861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 168909427 - 2²³ = 160520819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168909437) 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 7 ways as a sum of consecutive naturals, for example, 45973 + ... + 49510.

It is an arithmetic number, because the mean of its divisors is an integer number (22200030).

Almost surely, 2^168909427 is an apocalyptic number.

168909427 is a deficient number, since it is larger than the sum of its proper divisors (8690813).

168909427 is an equidigital number, since it uses as much as digits as its factorization.

168909427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95573.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 168909427 is about 12996.5159562092. The cubic root of 168909427 is about 552.7786949368.

The spelling of 168909427 in words is "one hundred sixty-eight million, nine hundred nine thousand, four hundred twenty-seven".