168140945 has 8 divisors (see below), whose sum is σ = 230593344. Its totient is φ = 115296624.

The previous prime is 168140923. The next prime is 168140953. The reversal of 168140945 is 549041861.

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 168140945 - 2¹⁰ = 168139921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168140899 and 168140908.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2401979 + ... + 2402048.

It is an arithmetic number, because the mean of its divisors is an integer number (28824168).

Almost surely, 2^168140945 is an apocalyptic number.

It is an amenable number.

168140945 is a deficient number, since it is larger than the sum of its proper divisors (62452399).

168140945 is an equidigital number, since it uses as much as digits as its factorization.

168140945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4804039.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 168140945 is about 12966.9173283398. The cubic root of 168140945 is about 551.9391003055.

The spelling of 168140945 in words is "one hundred sixty-eight million, one hundred forty thousand, nine hundred forty-five".