1868339518253 has 8 divisors (see below), whose sum is σ = 2012100194328. Its totient is φ = 1724584878144.

The previous prime is 1868339518249. The next prime is 1868339518291. The reversal of 1868339518253 is 3528159338681.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 280038880969 + 1588300637284 = 529187^2 + 1260278^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1868339518253 - 2² = 1868339518249 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1868339508253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 855626 + ... + 2113947.

It is an arithmetic number, because the mean of its divisors is an integer number (251512524291).

Almost surely, 2^{1868339518253} is an apocalyptic number.

1868339518253 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1868339518253 is a deficient number, since it is larger than the sum of its proper divisors (143760676075).

1868339518253 is a wasteful number, since it uses less digits than its factorization.

1868339518253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3017983.

The product of its digits is 37324800, while the sum is 62.

The spelling of 1868339518253 in words is "one trillion, eight hundred sixty-eight billion, three hundred thirty-nine million, five hundred eighteen thousand, two hundred fifty-three".