164137447 has 8 divisors (see below), whose sum is σ = 173254400. Its totient is φ = 155068344.

The previous prime is 164137433. The next prime is 164137481. The reversal of 164137447 is 744731461.

It is a happy number.

164137447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164137447 - 2¹⁵ = 164104679 is a prime.

It is a super-2 number, since 2×164137447² = 53882203015355618, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164137417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4797 + ... + 18742.

It is an arithmetic number, because the mean of its divisors is an integer number (21656800).

Almost surely, 2^164137447 is an apocalyptic number.

164137447 is a deficient number, since it is larger than the sum of its proper divisors (9116953).

164137447 is a wasteful number, since it uses less digits than its factorization.

164137447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23925.

The product of its digits is 56448, while the sum is 37.

The square root of 164137447 is about 12811.6137547149. The cubic root of 164137447 is about 547.5232402581.

The spelling of 164137447 in words is "one hundred sixty-four million, one hundred thirty-seven thousand, four hundred forty-seven".