1368833885 has 4 divisors (see below), whose sum is σ = 1642600668. Its totient is φ = 1095067104.

The previous prime is 1368833867. The next prime is 1368833899. The reversal of 1368833885 is 5883388631.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1036646809 + 332187076 = 32197^2 + 18226^2 .

It is a cyclic number.

It is not a de Polignac number, because 1368833885 - 2⁶ = 1368833821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 136883384 + ... + 136883393.

It is an arithmetic number, because the mean of its divisors is an integer number (410650167).

Almost surely, 2^1368833885 is an apocalyptic number.

It is an amenable number.

1368833885 is a deficient number, since it is larger than the sum of its proper divisors (273766783).

1368833885 is an equidigital number, since it uses as much as digits as its factorization.

1368833885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273766782.

The product of its digits is 3317760, while the sum is 53.

The square root of 1368833885 is about 36997.7551346024. The cubic root of 1368833885 is about 1110.3253341208.

The spelling of 1368833885 in words is "one billion, three hundred sixty-eight million, eight hundred thirty-three thousand, eight hundred eighty-five".