1838274638203 has 2 divisors, whose sum is σ = 1838274638204. Its totient is φ = 1838274638202.

The previous prime is 1838274638159. The next prime is 1838274638257. The reversal of 1838274638203 is 3028364728381.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1838274638203 is a prime.

It is not a weakly prime, because it can be changed into another prime (1838274638303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 919137319101 + 919137319102.

It is an arithmetic number, because the mean of its divisors is an integer number (919137319102).

Almost surely, 2^{1838274638203} is an apocalyptic number.

1838274638203 is a deficient number, since it is larger than the sum of its proper divisors (1).

1838274638203 is an equidigital number, since it uses as much as digits as its factorization.

1838274638203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9289728, while the sum is 55.

The spelling of 1838274638203 in words is "one trillion, eight hundred thirty-eight billion, two hundred seventy-four million, six hundred thirty-eight thousand, two hundred three".