1145656653 has 4 divisors (see below), whose sum is σ = 1527542208. Its totient is φ = 763771100.

The previous prime is 1145656643. The next prime is 1145656709. The reversal of 1145656653 is 3566565411.

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.

It is a cyclic number.

It is not a de Polignac number, because 1145656653 - 2⁴ = 1145656637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145656643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190942773 + ... + 190942778.

It is an arithmetic number, because the mean of its divisors is an integer number (381885552).

Almost surely, 2^1145656653 is an apocalyptic number.

It is an amenable number.

1145656653 is a deficient number, since it is larger than the sum of its proper divisors (381885555).

1145656653 is an equidigital number, since it uses as much as digits as its factorization.

1145656653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381885554.

The product of its digits is 324000, while the sum is 42.

The square root of 1145656653 is about 33847.5501772285. The cubic root of 1145656653 is about 1046.3689096603.

The spelling of 1145656653 in words is "one billion, one hundred forty-five million, six hundred fifty-six thousand, six hundred fifty-three".