1230616553 has 8 divisors (see below), whose sum is σ = 1320856488. Its totient is φ = 1142360064.

The previous prime is 1230616547. The next prime is 1230616571. The reversal of 1230616553 is 3556160321.

It can be written as a sum of positive squares in 4 ways, for example, as 730512784 + 500103769 = 27028^2 + 22363^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1230616553 - 2¹⁴ = 1230600169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230616253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494576 + ... + 497057.

It is an arithmetic number, because the mean of its divisors is an integer number (165107061).

Almost surely, 2^1230616553 is an apocalyptic number.

It is an amenable number.

1230616553 is a deficient number, since it is larger than the sum of its proper divisors (90239935).

1230616553 is an equidigital number, since it uses as much as digits as its factorization.

1230616553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991723.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 1230616553 is about 35080.1447117882. The cubic root of 1230616553 is about 1071.6202642658.

Adding to 1230616553 its reverse (3556160321), we get a palindrome (4786776874).

The spelling of 1230616553 in words is "one billion, two hundred thirty million, six hundred sixteen thousand, five hundred fifty-three".