158438205 has 24 divisors (see below), whose sum is σ = 277300608. Its totient is φ = 83677536.

The previous prime is 158438123. The next prime is 158438209. The reversal of 158438205 is 502834851.

It is a happy number.

158438205 is a `hidden beast` number, since 15 + 8 + 438 + 205 = 666.

It is not a de Polignac number, because 158438205 - 2¹² = 158434109 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 158438205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158438209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12457 + ... + 21726.

It is an arithmetic number, because the mean of its divisors is an integer number (11554192).

Almost surely, 2^158438205 is an apocalyptic number.

158438205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

158438205 is a deficient number, since it is larger than the sum of its proper divisors (118862403).

158438205 is a wasteful number, since it uses less digits than its factorization.

158438205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34297 (or 34294 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The square root of 158438205 is about 12587.2238797918. The cubic root of 158438205 is about 541.1113429273. Note that the first 3 decimals are identical.

The spelling of 158438205 in words is "one hundred fifty-eight million, four hundred thirty-eight thousand, two hundred five".