1838950868499 has 4 divisors (see below), whose sum is σ = 2451934491336. Its totient is φ = 1225967245664.

The previous prime is 1838950868471. The next prime is 1838950868533. The reversal of 1838950868499 is 9948680598381.

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

It is a cyclic number.

It is not a de Polignac number, because 1838950868499 - 2²⁷ = 1838816650771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1838950868099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306491811414 + ... + 306491811419.

It is an arithmetic number, because the mean of its divisors is an integer number (612983622834).

Almost surely, 2^{1838950868499} is an apocalyptic number.

1838950868499 is a deficient number, since it is larger than the sum of its proper divisors (612983622837).

1838950868499 is an equidigital number, since it uses as much as digits as its factorization.

1838950868499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612983622836.

The product of its (nonzero) digits is 1074954240, while the sum is 78.

The spelling of 1838950868499 in words is "one trillion, eight hundred thirty-eight billion, nine hundred fifty million, eight hundred sixty-eight thousand, four hundred ninety-nine".