164158447 has 4 divisors (see below), whose sum is σ = 164496016. Its totient is φ = 163820880.

The previous prime is 164158433. The next prime is 164158459. The reversal of 164158447 is 744851461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744851461 = 43 ⋅17322127.

It is a cyclic number.

It is not a de Polignac number, because 164158447 - 2²³ = 155769839 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 (164158417) 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, 168054 + ... + 169027.

It is an arithmetic number, because the mean of its divisors is an integer number (41124004).

Almost surely, 2^164158447 is an apocalyptic number.

164158447 is a deficient number, since it is larger than the sum of its proper divisors (337569).

164158447 is an equidigital number, since it uses as much as digits as its factorization.

164158447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337568.

The product of its digits is 107520, while the sum is 40.

The square root of 164158447 is about 12812.4332973873. The cubic root of 164158447 is about 547.5465895870.

The spelling of 164158447 in words is "one hundred sixty-four million, one hundred fifty-eight thousand, four hundred forty-seven".