158643069 has 32 divisors (see below), whose sum is σ = 233735040. Its totient is φ = 95116032.

The previous prime is 158643059. The next prime is 158643083. The reversal of 158643069 is 960346851.

It is not a de Polignac number, because 158643069 - 2⁴ = 158643053 is a prime.

It is a super-2 number, since 2×158643069² = 50335246683477522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 158643069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158643059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 284539 + ... + 285095.

It is an arithmetic number, because the mean of its divisors is an integer number (7304220).

Almost surely, 2^158643069 is an apocalyptic number.

It is an amenable number.

158643069 is a deficient number, since it is larger than the sum of its proper divisors (75091971).

158643069 is a wasteful number, since it uses less digits than its factorization.

158643069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 158643069 is about 12595.3590262445. The cubic root of 158643069 is about 541.3444653392.

The spelling of 158643069 in words is "one hundred fifty-eight million, six hundred forty-three thousand, sixty-nine".