1868368539 has 16 divisors (see below), whose sum is σ = 2560764672. Its totient is φ = 1210835808.

The previous prime is 1868368531. The next prime is 1868368549. The reversal of 1868368539 is 9358638681.

It is not a de Polignac number, because 1868368539 - 2³ = 1868368531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1868368531) 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, 128872 + ... + 142634.

It is an arithmetic number, because the mean of its divisors is an integer number (160047792).

Almost surely, 2^1868368539 is an apocalyptic number.

1868368539 is a deficient number, since it is larger than the sum of its proper divisors (692396133).

1868368539 is a wasteful number, since it uses less digits than its factorization.

1868368539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15026.

The product of its digits is 7464960, while the sum is 57.

The square root of 1868368539 is about 43224.6288474522. The cubic root of 1868368539 is about 1231.6505786746.

The spelling of 1868368539 in words is "one billion, eight hundred sixty-eight million, three hundred sixty-eight thousand, five hundred thirty-nine".