164442957 has 8 divisors (see below), whose sum is σ = 250579776. Its totient is φ = 93967392.

The previous prime is 164442947. The next prime is 164442973. The reversal of 164442957 is 759244461.

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

It is not a de Polignac number, because 164442957 - 2¹¹ = 164440909 is a prime.

It is a super-2 number, since 2×164442957² = 54082972213807698, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164442907) 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, 3915288 + ... + 3915329.

It is an arithmetic number, because the mean of its divisors is an integer number (31322472).

Almost surely, 2^164442957 is an apocalyptic number.

It is an amenable number.

164442957 is a deficient number, since it is larger than the sum of its proper divisors (86136819).

164442957 is an equidigital number, since it uses as much as digits as its factorization.

164442957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7830627.

The product of its digits is 241920, while the sum is 42.

The square root of 164442957 is about 12823.5313779006. The cubic root of 164442957 is about 547.8627324597.

The spelling of 164442957 in words is "one hundred sixty-four million, four hundred forty-two thousand, nine hundred fifty-seven".