168372249 has 4 divisors (see below), whose sum is σ = 224496336. Its totient is φ = 112248164.

The previous prime is 168372209. The next prime is 168372251. The reversal of 168372249 is 942273861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 168372249 - 2⁸ = 168371993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168372249.

It is not an unprimeable number, because it can be changed into a prime (168372209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28062039 + ... + 28062044.

It is an arithmetic number, because the mean of its divisors is an integer number (56124084).

Almost surely, 2^168372249 is an apocalyptic number.

It is an amenable number.

168372249 is a deficient number, since it is larger than the sum of its proper divisors (56124087).

168372249 is an equidigital number, since it uses as much as digits as its factorization.

168372249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56124086.

The product of its digits is 145152, while the sum is 42.

The square root of 168372249 is about 12975.8332680410. The cubic root of 168372249 is about 552.1920770071.

The spelling of 168372249 in words is "one hundred sixty-eight million, three hundred seventy-two thousand, two hundred forty-nine".