1152863689 has 4 divisors (see below), whose sum is σ = 1163638224. Its totient is φ = 1142089156.

The previous prime is 1152863639. The next prime is 1152863713. The reversal of 1152863689 is 9863682511.

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: 9863682511 = 19319 ⋅510569.

It is a cyclic number.

It is not a de Polignac number, because 1152863689 - 2²¹ = 1150766537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1152863639) 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, 5387107 + ... + 5387320.

It is an arithmetic number, because the mean of its divisors is an integer number (290909556).

Almost surely, 2^1152863689 is an apocalyptic number.

It is an amenable number.

1152863689 is a deficient number, since it is larger than the sum of its proper divisors (10774535).

1152863689 is a wasteful number, since it uses less digits than its factorization.

1152863689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10774534.

The product of its digits is 622080, while the sum is 49.

The square root of 1152863689 is about 33953.8464536789. The cubic root of 1152863689 is about 1048.5584720443.

The spelling of 1152863689 in words is "one billion, one hundred fifty-two million, eight hundred sixty-three thousand, six hundred eighty-nine".