1138242073 has 4 divisors (see below), whose sum is σ = 1141833060. Its totient is φ = 1134651088.

The previous prime is 1138242043. The next prime is 1138242113. The reversal of 1138242073 is 3702428311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 256864729 + 881377344 = 16027^2 + 29688^2 .

It is a cyclic number.

It is not a de Polignac number, because 1138242073 - 2¹³ = 1138233881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1138242043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1795018 + ... + 1795651.

It is an arithmetic number, because the mean of its divisors is an integer number (285458265).

Almost surely, 2^1138242073 is an apocalyptic number.

It is an amenable number.

1138242073 is a deficient number, since it is larger than the sum of its proper divisors (3590987).

1138242073 is an equidigital number, since it uses as much as digits as its factorization.

1138242073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3590986.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 1138242073 is about 33737.8433365264. The cubic root of 1138242073 is about 1044.1066892455.

The spelling of 1138242073 in words is "one billion, one hundred thirty-eight million, two hundred forty-two thousand, seventy-three".