164946029939 has 4 divisors (see below), whose sum is σ = 164951005224. Its totient is φ = 164941054656.

The previous prime is 164946029923. The next prime is 164946029951. The reversal of 164946029939 is 939920649461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 939920649461 = 739 ⋅1271881799.

It is a cyclic number.

It is not a de Polignac number, because 164946029939 - 2⁴ = 164946029923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164946029959) 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, 2437577 + ... + 2504330.

It is an arithmetic number, because the mean of its divisors is an integer number (41237751306).

Almost surely, 2^164946029939 is an apocalyptic number.

164946029939 is a deficient number, since it is larger than the sum of its proper divisors (4975285).

164946029939 is an equidigital number, since it uses as much as digits as its factorization.

164946029939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4975284.

The product of its (nonzero) digits is 22674816, while the sum is 62.

The spelling of 164946029939 in words is "one hundred sixty-four billion, nine hundred forty-six million, twenty-nine thousand, nine hundred thirty-nine".