168870045 has 32 divisors (see below), whose sum is σ = 282297600. Its totient is φ = 86091264.

The previous prime is 168870029. The next prime is 168870047. The reversal of 168870045 is 540078861.

It is not a de Polignac number, because 168870045 - 2⁴ = 168870029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 168869985 and 168870012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168870047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42921 + ... + 46689.

It is an arithmetic number, because the mean of its divisors is an integer number (8821800).

Almost surely, 2^168870045 is an apocalyptic number.

168870045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

168870045 is a deficient number, since it is larger than the sum of its proper divisors (113427555).

168870045 is a wasteful number, since it uses less digits than its factorization.

168870045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3909.

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 168870045 is about 12995.0007695267. Note that the first 3 decimals coincide. The cubic root of 168870045 is about 552.7357306431.

The spelling of 168870045 in words is "one hundred sixty-eight million, eight hundred seventy thousand, forty-five".