1623322489 has 4 divisors (see below), whose sum is σ = 1624761460. Its totient is φ = 1621883520.

The previous prime is 1623322439. The next prime is 1623322511. The reversal of 1623322489 is 9842233261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9842233261 = 7 ⋅1406033323.

It can be written as a sum of positive squares in 2 ways, for example, as 351187600 + 1272134889 = 18740^2 + 35667^2 .

It is a cyclic number.

It is not a de Polignac number, because 1623322489 - 2⁹ = 1623321977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1623322429) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 717792 + ... + 720049.

It is an arithmetic number, because the mean of its divisors is an integer number (406190365).

Almost surely, 2^1623322489 is an apocalyptic number.

It is an amenable number.

1623322489 is a deficient number, since it is larger than the sum of its proper divisors (1438971).

1623322489 is a wasteful number, since it uses less digits than its factorization.

1623322489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1438970.

The product of its digits is 124416, while the sum is 40.

The square root of 1623322489 is about 40290.4764057215. The cubic root of 1623322489 is about 1175.2626517716.

The spelling of 1623322489 in words is "one billion, six hundred twenty-three million, three hundred twenty-two thousand, four hundred eighty-nine".