164444951 has 8 divisors (see below), whose sum is σ = 179760000. Its totient is φ = 149190840.

The previous prime is 164444947. The next prime is 164444953. The reversal of 164444951 is 159444461.

It is a happy number.

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 164444951 - 2² = 164444947 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 (164444953) 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, 9491 + ... + 20468.

It is an arithmetic number, because the mean of its divisors is an integer number (22470000).

Almost surely, 2^164444951 is an apocalyptic number.

164444951 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

164444951 is a deficient number, since it is larger than the sum of its proper divisors (15315049).

164444951 is a wasteful number, since it uses less digits than its factorization.

164444951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30469.

The product of its digits is 69120, while the sum is 38.

The square root of 164444951 is about 12823.6091253594. The cubic root of 164444951 is about 547.8649468727.

The spelling of 164444951 in words is "one hundred sixty-four million, four hundred forty-four thousand, nine hundred fifty-one".