1138709983 has 2 divisors, whose sum is σ = 1138709984. Its totient is φ = 1138709982.

The previous prime is 1138709981. The next prime is 1138709987. The reversal of 1138709983 is 3899078311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1138709983 - 2¹ = 1138709981 is a prime.

Together with 1138709981, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1138709981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569354991 + 569354992.

It is an arithmetic number, because the mean of its divisors is an integer number (569354992).

Almost surely, 2^1138709983 is an apocalyptic number.

1138709983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138709983 is an equidigital number, since it uses as much as digits as its factorization.

1138709983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 49.

The square root of 1138709983 is about 33744.7771218006. Note that the first 3 decimals coincide. The cubic root of 1138709983 is about 1044.2497405476.

The spelling of 1138709983 in words is "one billion, one hundred thirty-eight million, seven hundred nine thousand, nine hundred eighty-three".