168449649 has 8 divisors (see below), whose sum is σ = 236420640. Its totient is φ = 106389216.

The previous prime is 168449647. The next prime is 168449653. The reversal of 168449649 is 946944861.

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

It is not a de Polignac number, because 168449649 - 2¹ = 168449647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (168449647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1477572 + ... + 1477685.

It is an arithmetic number, because the mean of its divisors is an integer number (29552580).

Almost surely, 2^168449649 is an apocalyptic number.

168449649 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

168449649 is a deficient number, since it is larger than the sum of its proper divisors (67970991).

168449649 is a wasteful number, since it uses less digits than its factorization.

168449649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2955279.

The product of its digits is 1492992, while the sum is 51.

The square root of 168449649 is about 12978.8153927853. The cubic root of 168449649 is about 552.2766774873.

The spelling of 168449649 in words is "one hundred sixty-eight million, four hundred forty-nine thousand, six hundred forty-nine".