1123561145 has 8 divisors (see below), whose sum is σ = 1540883904. Its totient is φ = 770441904.

The previous prime is 1123561141. The next prime is 1123561157. The reversal of 1123561145 is 5411653211.

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

It is a cyclic number.

It is not a de Polignac number, because 1123561145 - 2² = 1123561141 is a prime.

It is a super-2 number, since 2×1123561145² = 2524779293107422050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1123561141) 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, 16050839 + ... + 16050908.

It is an arithmetic number, because the mean of its divisors is an integer number (192610488).

Almost surely, 2^1123561145 is an apocalyptic number.

It is an amenable number.

1123561145 is a deficient number, since it is larger than the sum of its proper divisors (417322759).

1123561145 is an equidigital number, since it uses as much as digits as its factorization.

1123561145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32101759.

The product of its digits is 3600, while the sum is 29.

The square root of 1123561145 is about 33519.5636158945. The cubic root of 1123561145 is about 1039.5983239869.

The spelling of 1123561145 in words is "one billion, one hundred twenty-three million, five hundred sixty-one thousand, one hundred forty-five".