1158345563 has 4 divisors (see below), whose sum is σ = 1158997008. Its totient is φ = 1157694120.

The previous prime is 1158345511. The next prime is 1158345577. The reversal of 1158345563 is 3655438511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3655438511 = 1453 ⋅2515787.

It is a cyclic number.

It is not a de Polignac number, because 1158345563 - 2¹² = 1158341467 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1158345563.

It is not an unprimeable number, because it can be changed into a prime (1158345863) 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, 323048 + ... + 326613.

It is an arithmetic number, because the mean of its divisors is an integer number (289749252).

Almost surely, 2^1158345563 is an apocalyptic number.

1158345563 is a deficient number, since it is larger than the sum of its proper divisors (651445).

1158345563 is an equidigital number, since it uses as much as digits as its factorization.

1158345563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651444.

The product of its digits is 216000, while the sum is 41.

The square root of 1158345563 is about 34034.4760941020. The cubic root of 1158345563 is about 1050.2178121079.

The spelling of 1158345563 in words is "one billion, one hundred fifty-eight million, three hundred forty-five thousand, five hundred sixty-three".