1123136453 has 8 divisors (see below), whose sum is σ = 1144074840. Its totient is φ = 1102279680.

The previous prime is 1123136431. The next prime is 1123136489. The reversal of 1123136453 is 3546313211.

It can be written as a sum of positive squares in 4 ways, for example, as 361266049 + 761870404 = 19007^2 + 27602^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123136453 is a prime.

It is a super-2 number, since 2×1123136453² = 2522870984114842418, 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 (1123136153) 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, 7733 + ... + 48021.

It is an arithmetic number, because the mean of its divisors is an integer number (143009355).

Almost surely, 2^1123136453 is an apocalyptic number.

It is an amenable number.

1123136453 is a deficient number, since it is larger than the sum of its proper divisors (20938387).

1123136453 is an equidigital number, since it uses as much as digits as its factorization.

1123136453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40807.

The product of its digits is 6480, while the sum is 29.

The square root of 1123136453 is about 33513.2280301376. The cubic root of 1123136453 is about 1039.4673224438.

Adding to 1123136453 its reverse (3546313211), we get a palindrome (4669449664).

The spelling of 1123136453 in words is "one billion, one hundred twenty-three million, one hundred thirty-six thousand, four hundred fifty-three".