868049155 has 16 divisors (see below), whose sum is σ = 1106301024. Its totient is φ = 651594240.

The previous prime is 868049153. The next prime is 868049159. The reversal of 868049155 is 551940868.

868049155 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 868049155 - 2¹ = 868049153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (868049153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12709 + ... + 43561.

It is an arithmetic number, because the mean of its divisors is an integer number (69143814).

Almost surely, 2^868049155 is an apocalyptic number.

868049155 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

868049155 is a deficient number, since it is larger than the sum of its proper divisors (238251869).

868049155 is a wasteful number, since it uses less digits than its factorization.

868049155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31206.

The product of its (nonzero) digits is 345600, while the sum is 46.

The square root of 868049155 is about 29462.6739282096. The cubic root of 868049155 is about 953.9261908771.

It can be divided in two parts, 86804 and 9155, that added together give a palindrome (95959).

The spelling of 868049155 in words is "eight hundred sixty-eight million, forty-nine thousand, one hundred fifty-five".