1868514371249 has 2 divisors, whose sum is σ = 1868514371250. Its totient is φ = 1868514371248.

The previous prime is 1868514371219. The next prime is 1868514371341. The reversal of 1868514371249 is 9421734158681.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1003316745649 + 865197625600 = 1001657^2 + 930160^2 .

It is a cyclic number.

It is not a de Polignac number, because 1868514371249 - 2²⁰ = 1868513322673 is a prime.

It is not a weakly prime, because it can be changed into another prime (1868514371219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 934257185624 + 934257185625.

It is an arithmetic number, because the mean of its divisors is an integer number (934257185625).

Almost surely, 2^{1868514371249} is an apocalyptic number.

It is an amenable number.

1868514371249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1868514371249 is an equidigital number, since it uses as much as digits as its factorization.

1868514371249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11612160, while the sum is 59.

The spelling of 1868514371249 in words is "one trillion, eight hundred sixty-eight billion, five hundred fourteen million, three hundred seventy-one thousand, two hundred forty-nine".