1138738 has 4 divisors (see below), whose sum is σ = 1708110. Its totient is φ = 569368.

The previous prime is 1138733. The next prime is 1138741. The reversal of 1138738 is 8378311.

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

It can be written as a sum of positive squares in only one way, i.e., 1108809 + 29929 = 1053^2 + 173^2 .

It is not an unprimeable number, because it can be changed into a prime (1138733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 284683 + ... + 284686.

2^1138738 is an apocalyptic number.

1138738 is a deficient number, since it is larger than the sum of its proper divisors (569372).

1138738 is an equidigital number, since it uses as much as digits as its factorization.

1138738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 569371.

The product of its digits is 4032, while the sum is 31.

The square root of 1138738 is about 1067.1166759076. The cubic root of 1138738 is about 104.4258304772.

The spelling of 1138738 in words is "one million, one hundred thirty-eight thousand, seven hundred thirty-eight".