1123415645 has 16 divisors (see below), whose sum is σ = 1510403328. Its totient is φ = 794946240.

The previous prime is 1123415639. The next prime is 1123415647. The reversal of 1123415645 is 5465143211.

It is not a de Polignac number, because 1123415645 - 2⁶ = 1123415581 is a prime.

It is a super-2 number, since 2×1123415645² = 2524125422861532050, 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 (1123415647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273989 + ... + 278058.

It is an arithmetic number, because the mean of its divisors is an integer number (94400208).

Almost surely, 2^1123415645 is an apocalyptic number.

It is an amenable number.

1123415645 is a deficient number, since it is larger than the sum of its proper divisors (386987683).

1123415645 is a wasteful number, since it uses less digits than its factorization.

1123415645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552100.

The product of its digits is 14400, while the sum is 32.

The square root of 1123415645 is about 33517.3931713073. The cubic root of 1123415645 is about 1039.5534464157.

Adding to 1123415645 its reverse (5465143211), we get a palindrome (6588558856).

The spelling of 1123415645 in words is "one billion, one hundred twenty-three million, four hundred fifteen thousand, six hundred forty-five".