1868884765 has 16 divisors (see below), whose sum is σ = 2447444160. Its totient is φ = 1358686720.

The previous prime is 1868884691. The next prime is 1868884769. The reversal of 1868884765 is 5674888681.

It is not a de Polignac number, because 1868884765 - 2⁹ = 1868884253 is a prime.

It is a super-3 number, since 3×1868884765³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1868884769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212781 + ... + 221389.

It is an arithmetic number, because the mean of its divisors is an integer number (152965260).

Almost surely, 2^1868884765 is an apocalyptic number.

It is an amenable number.

1868884765 is a deficient number, since it is larger than the sum of its proper divisors (578559395).

1868884765 is a wasteful number, since it uses less digits than its factorization.

1868884765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12572.

The product of its digits is 20643840, while the sum is 61.

The square root of 1868884765 is about 43230.5998686116. The cubic root of 1868884765 is about 1231.7640023184.

The spelling of 1868884765 in words is "one billion, eight hundred sixty-eight million, eight hundred eighty-four thousand, seven hundred sixty-five".