1229800573 has 4 divisors (see below), whose sum is σ = 1229915520. Its totient is φ = 1229685628.

The previous prime is 1229800483. The next prime is 1229800589. The reversal of 1229800573 is 3750089221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3750089221 = 3571 ⋅1050151.

It is a cyclic number.

It is not a de Polignac number, because 1229800573 - 2¹³ = 1229792381 is a prime.

It is a super-2 number, since 2×1229800573² = 3024818898702256658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229800373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39565 + ... + 63442.

It is an arithmetic number, because the mean of its divisors is an integer number (307478880).

Almost surely, 2^1229800573 is an apocalyptic number.

It is an amenable number.

1229800573 is a deficient number, since it is larger than the sum of its proper divisors (114947).

1229800573 is a wasteful number, since it uses less digits than its factorization.

1229800573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114946.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 1229800573 is about 35068.5125575637. The cubic root of 1229800573 is about 1071.3833602417.

Adding to 1229800573 its reverse (3750089221), we get a palindrome (4979889794).

The spelling of 1229800573 in words is "one billion, two hundred twenty-nine million, eight hundred thousand, five hundred seventy-three".