1145045653 has 4 divisors (see below), whose sum is σ = 1151664588. Its totient is φ = 1138426720.

The previous prime is 1145045651. The next prime is 1145045669. The reversal of 1145045653 is 3565405411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3565405411 = 167 ⋅21349733.

It can be written as a sum of positive squares in 2 ways, for example, as 471020209 + 674025444 = 21703^2 + 25962^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145045653 - 2¹ = 1145045651 is a prime.

It is a super-2 number, since 2×1145045653² = 2622259094908392818, 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 (1145045651) 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, 3309208 + ... + 3309553.

It is an arithmetic number, because the mean of its divisors is an integer number (287916147).

Almost surely, 2^1145045653 is an apocalyptic number.

It is an amenable number.

1145045653 is a deficient number, since it is larger than the sum of its proper divisors (6618935).

1145045653 is an equidigital number, since it uses as much as digits as its factorization.

1145045653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6618934.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 1145045653 is about 33838.5232095019. The cubic root of 1145045653 is about 1046.1828605820.

The spelling of 1145045653 in words is "one billion, one hundred forty-five million, forty-five thousand, six hundred fifty-three".