1453444609 has 4 divisors (see below), whose sum is σ = 1458088516. Its totient is φ = 1448800704.

The previous prime is 1453444583. The next prime is 1453444627. The reversal of 1453444609 is 9064443541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9064443541 = 1277 ⋅7098233.

It can be written as a sum of positive squares in 2 ways, for example, as 418407025 + 1035037584 = 20455^2 + 32172^2 .

It is a cyclic number.

It is not a de Polignac number, because 1453444609 - 2¹³ = 1453436417 is a prime.

It is a super-2 number, since 2×1453444609² = 4225002462862325762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1453444669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2321484 + ... + 2322109.

It is an arithmetic number, because the mean of its divisors is an integer number (364522129).

Almost surely, 2^1453444609 is an apocalyptic number.

It is an amenable number.

1453444609 is a deficient number, since it is larger than the sum of its proper divisors (4643907).

1453444609 is an equidigital number, since it uses as much as digits as its factorization.

1453444609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4643906.

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 1453444609 is about 38124.0686312466. The cubic root of 1453444609 is about 1132.7467595438.

The spelling of 1453444609 in words is "one billion, four hundred fifty-three million, four hundred forty-four thousand, six hundred nine".