168156045 has 24 divisors (see below), whose sum is σ = 295581312. Its totient is φ = 88418400.

The previous prime is 168156031. The next prime is 168156071. The reversal of 168156045 is 540651861.

168156045 is a `hidden beast` number, since 16 + 81 + 560 + 4 + 5 = 666.

168156045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 168156045 - 2⁴ = 168156029 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23121 + ... + 29510.

It is an arithmetic number, because the mean of its divisors is an integer number (12315888).

Almost surely, 2^168156045 is an apocalyptic number.

168156045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

168156045 is a deficient number, since it is larger than the sum of its proper divisors (127425267).

168156045 is a wasteful number, since it uses less digits than its factorization.

168156045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52713 (or 52710 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 168156045 is about 12967.4995662232. The cubic root of 168156045 is about 551.9556222200.

The spelling of 168156045 in words is "one hundred sixty-eight million, one hundred fifty-six thousand, forty-five".