1319138 has 4 divisors (see below), whose sum is σ = 1978710. Its totient is φ = 659568.

The previous prime is 1319137. The next prime is 1319147. The reversal of 1319138 is 8319131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8319131 = 19 ⋅437849.

It can be written as a sum of positive squares in only one way, i.e., 683929 + 635209 = 827^2 + 797^2 .

It is not an unprimeable number, because it can be changed into a prime (1319137) 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, 329783 + ... + 329786.

2^1319138 is an apocalyptic number.

1319138 is a deficient number, since it is larger than the sum of its proper divisors (659572).

1319138 is an equidigital number, since it uses as much as digits as its factorization.

1319138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659571.

The product of its digits is 648, while the sum is 26.

The square root of 1319138 is about 1148.5373306950. The cubic root of 1319138 is about 109.6722475498.

The spelling of 1319138 in words is "one million, three hundred nineteen thousand, one hundred thirty-eight".