1158533023 has 16 divisors (see below), whose sum is σ = 1278369792. Its totient is φ = 1046232000.

The previous prime is 1158532997. The next prime is 1158533041. The reversal of 1158533023 is 3203358511.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1158533023 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158533053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9418 + ... + 49048.

It is an arithmetic number, because the mean of its divisors is an integer number (79898112).

Almost surely, 2^1158533023 is an apocalyptic number.

1158533023 is a deficient number, since it is larger than the sum of its proper divisors (119836769).

1158533023 is a wasteful number, since it uses less digits than its factorization.

1158533023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39726.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 1158533023 is about 34037.2299548597. The cubic root of 1158533023 is about 1050.2744627938.

The spelling of 1158533023 in words is "one billion, one hundred fifty-eight million, five hundred thirty-three thousand, twenty-three".