1123152461 has 4 divisors (see below), whose sum is σ = 1127627424. Its totient is φ = 1118677500.

The previous prime is 1123152449. The next prime is 1123152469. The reversal of 1123152461 is 1642513211.

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: 1642513211 = 389 ⋅4222399.

It is a cyclic number.

It is not a de Polignac number, because 1123152461 - 2²² = 1118958157 is a prime.

It is a super-2 number, since 2×1123152461² = 2522942901300713042, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1123152461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123152469) 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, 2237105 + ... + 2237606.

It is an arithmetic number, because the mean of its divisors is an integer number (281906856).

Almost surely, 2^1123152461 is an apocalyptic number.

It is an amenable number.

1123152461 is a deficient number, since it is larger than the sum of its proper divisors (4474963).

1123152461 is an equidigital number, since it uses as much as digits as its factorization.

1123152461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4474962.

The product of its digits is 1440, while the sum is 26.

The square root of 1123152461 is about 33513.4668603533. The cubic root of 1123152461 is about 1039.4722609099.

Adding to 1123152461 its reverse (1642513211), we get a palindrome (2765665672).

The spelling of 1123152461 in words is "one billion, one hundred twenty-three million, one hundred fifty-two thousand, four hundred sixty-one".