164437401 has 16 divisors (see below), whose sum is σ = 221678784. Its totient is φ = 108417024.

The previous prime is 164437397. The next prime is 164437409. The reversal of 164437401 is 104734461.

It is not a de Polignac number, because 164437401 - 2² = 164437397 is a prime.

It is a super-3 number, since 3×164437401³ (a number of 26 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (164437409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142041 + ... + 143193.

It is an arithmetic number, because the mean of its divisors is an integer number (13854924).

Almost surely, 2^164437401 is an apocalyptic number.

It is an amenable number.

164437401 is a deficient number, since it is larger than the sum of its proper divisors (57241383).

164437401 is a wasteful number, since it uses less digits than its factorization.

164437401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 164437401 is about 12823.3147430764. The cubic root of 164437401 is about 547.8565622154.

The spelling of 164437401 in words is "one hundred sixty-four million, four hundred thirty-seven thousand, four hundred one".