168873615 has 48 divisors (see below), whose sum is σ = 309703680. Its totient is φ = 84888000.

The previous prime is 168873557. The next prime is 168873619. The reversal of 168873615 is 516378861.

It is not a de Polignac number, because 168873615 - 2¹⁰ = 168872591 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168873619) 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 47 ways as a sum of consecutive naturals, for example, 224490 + ... + 225240.

It is an arithmetic number, because the mean of its divisors is an integer number (6452160).

Almost surely, 2^168873615 is an apocalyptic number.

168873615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

168873615 is a deficient number, since it is larger than the sum of its proper divisors (140830065).

168873615 is a wasteful number, since it uses less digits than its factorization.

168873615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044 (or 1041 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 168873615 is about 12995.1381293159. The cubic root of 168873615 is about 552.7396256553.

It can be divided in two parts, 16887 and 3615, that added together give a palindrome (20502).

The spelling of 168873615 in words is "one hundred sixty-eight million, eight hundred seventy-three thousand, six hundred fifteen".