1838143963 has 2 divisors, whose sum is σ = 1838143964. Its totient is φ = 1838143962.

The previous prime is 1838143907. The next prime is 1838144017. The reversal of 1838143963 is 3693418381.

It is a strong prime.

It is an emirp because it is prime and its reverse (3693418381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1838143963 - 2⁹ = 1838143451 is a prime.

It is not a weakly prime, because it can be changed into another prime (1838143903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 919071981 + 919071982.

It is an arithmetic number, because the mean of its divisors is an integer number (919071982).

Almost surely, 2^1838143963 is an apocalyptic number.

1838143963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1838143963 is an equidigital number, since it uses as much as digits as its factorization.

1838143963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 46.

The square root of 1838143963 is about 42873.5811776903. The cubic root of 1838143963 is about 1224.9729746641.

The spelling of 1838143963 in words is "one billion, eight hundred thirty-eight million, one hundred forty-three thousand, nine hundred sixty-three".