1138937983 has 4 divisors (see below), whose sum is σ = 1139843880. Its totient is φ = 1138032088.

The previous prime is 1138937977. The next prime is 1138937993. The reversal of 1138937983 is 3897398311.

It is a happy number.

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 1138937983 - 2¹³ = 1138929791 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1138937983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138937993) 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, 451060 + ... + 453577.

It is an arithmetic number, because the mean of its divisors is an integer number (284960970).

Almost surely, 2^1138937983 is an apocalyptic number.

1138937983 is a deficient number, since it is larger than the sum of its proper divisors (905897).

1138937983 is an equidigital number, since it uses as much as digits as its factorization.

1138937983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905896.

The product of its digits is 979776, while the sum is 52.

The square root of 1138937983 is about 33748.1552532875. The cubic root of 1138937983 is about 1044.3194314129.

The spelling of 1138937983 in words is "one billion, one hundred thirty-eight million, nine hundred thirty-seven thousand, nine hundred eighty-three".