868188145 has 8 divisors (see below), whose sum is σ = 1136537280. Its totient is φ = 631409520.

The previous prime is 868188143. The next prime is 868188149. The reversal of 868188145 is 541881868.

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

It is not a de Polignac number, because 868188145 - 2¹ = 868188143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (868188143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7892565 + ... + 7892674.

It is an arithmetic number, because the mean of its divisors is an integer number (142067160).

Almost surely, 2^868188145 is an apocalyptic number.

It is an amenable number.

868188145 is a deficient number, since it is larger than the sum of its proper divisors (268349135).

868188145 is a wasteful number, since it uses less digits than its factorization.

868188145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15785255.

The product of its digits is 491520, while the sum is 49.

The square root of 868188145 is about 29465.0325810103. The cubic root of 868188145 is about 953.9771016366.

The spelling of 868188145 in words is "eight hundred sixty-eight million, one hundred eighty-eight thousand, one hundred forty-five".