158671447 has 4 divisors (see below), whose sum is σ = 173096136. Its totient is φ = 144246760.

The previous prime is 158671393. The next prime is 158671459. The reversal of 158671447 is 744176851.

158671447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 158671447 - 2¹⁹ = 158147159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158677447) 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, 7212328 + ... + 7212349.

It is an arithmetic number, because the mean of its divisors is an integer number (43274034).

Almost surely, 2^158671447 is an apocalyptic number.

158671447 is a deficient number, since it is larger than the sum of its proper divisors (14424689).

158671447 is a wasteful number, since it uses less digits than its factorization.

158671447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14424688.

The product of its digits is 188160, while the sum is 43.

The square root of 158671447 is about 12596.4855019168. The cubic root of 158671447 is about 541.3767418986.

The spelling of 158671447 in words is "one hundred fifty-eight million, six hundred seventy-one thousand, four hundred forty-seven".