1673138 has 4 divisors (see below), whose sum is σ = 2509710. Its totient is φ = 836568.

The previous prime is 1673137. The next prime is 1673167. The reversal of 1673138 is 8313761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8313761 = 167 ⋅49783.

It can be written as a sum of positive squares in only one way, i.e., 1129969 + 543169 = 1063^2 + 737^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1673138.

It is not an unprimeable number, because it can be changed into a prime (1673131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 418283 + ... + 418286.

2^1673138 is an apocalyptic number.

1673138 is a deficient number, since it is larger than the sum of its proper divisors (836572).

1673138 is an equidigital number, since it uses as much as digits as its factorization.

1673138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836571.

The product of its digits is 3024, while the sum is 29.

The square root of 1673138 is about 1293.4983571694. The cubic root of 1673138 is about 118.7163642502.

Adding to 1673138 its reverse (8313761), we get a palindrome (9986899).

The spelling of 1673138 in words is "one million, six hundred seventy-three thousand, one hundred thirty-eight".