158532643 has 2 divisors, whose sum is σ = 158532644. Its totient is φ = 158532642.

The previous prime is 158532617. The next prime is 158532719. The reversal of 158532643 is 346235851.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 158532643 - 2⁵ = 158532611 is a prime.

It is not a weakly prime, because it can be changed into another prime (158532343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79266321 + 79266322.

It is an arithmetic number, because the mean of its divisors is an integer number (79266322).

Almost surely, 2^158532643 is an apocalyptic number.

158532643 is a deficient number, since it is larger than the sum of its proper divisors (1).

158532643 is an equidigital number, since it uses as much as digits as its factorization.

158532643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 37.

The square root of 158532643 is about 12590.9746644174. The cubic root of 158532643 is about 541.2188324124.

It can be divided in two parts, 15853 and 2643, that added together give a square (18496 = 136²).

The spelling of 158532643 in words is "one hundred fifty-eight million, five hundred thirty-two thousand, six hundred forty-three".