1138203743 has 4 divisors (see below), whose sum is σ = 1140694800. Its totient is φ = 1135712688.

The previous prime is 1138203739. The next prime is 1138203749. The reversal of 1138203743 is 3473028311.

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 1138203743 - 2² = 1138203739 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138203749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1244843 + ... + 1245756.

It is an arithmetic number, because the mean of its divisors is an integer number (285173700).

Almost surely, 2^1138203743 is an apocalyptic number.

1138203743 is a deficient number, since it is larger than the sum of its proper divisors (2491057).

1138203743 is an equidigital number, since it uses as much as digits as its factorization.

1138203743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2491056.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 1138203743 is about 33737.2752752797. The cubic root of 1138203743 is about 1044.0949691087.

The spelling of 1138203743 in words is "one billion, one hundred thirty-eight million, two hundred three thousand, seven hundred forty-three".