1423084538 has 4 divisors (see below), whose sum is σ = 2134626810. Its totient is φ = 711542268.

The previous prime is 1423084517. The next prime is 1423084561. The reversal of 1423084538 is 8354803241.

It is a happy number.

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., 983888689 + 439195849 = 31367^2 + 20957^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355771133 + ... + 355771136.

Almost surely, 2^1423084538 is an apocalyptic number.

1423084538 is a deficient number, since it is larger than the sum of its proper divisors (711542272).

1423084538 is an equidigital number, since it uses as much as digits as its factorization.

1423084538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711542271.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 1423084538 is about 37723.7927308483. The cubic root of 1423084538 is about 1124.8041240540.

Adding to 1423084538 its reverse (8354803241), we get a palindrome (9777887779).

The spelling of 1423084538 in words is "one billion, four hundred twenty-three million, eighty-four thousand, five hundred thirty-eight".