164647600849 has 4 divisors (see below), whose sum is σ = 164663859636. Its totient is φ = 164631342064.

The previous prime is 164647600841. The next prime is 164647600919. The reversal of 164647600849 is 948006746461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 149254732225 + 15392868624 = 386335^2 + 124068^2 .

It is a cyclic number.

It is not a de Polignac number, because 164647600849 - 2³ = 164647600841 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 164647600849.

It is not an unprimeable number, because it can be changed into a prime (164647600841) 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, 8114194 + ... + 8134459.

It is an arithmetic number, because the mean of its divisors is an integer number (41165964909).

Almost surely, 2^164647600849 is an apocalyptic number.

It is an amenable number.

164647600849 is a deficient number, since it is larger than the sum of its proper divisors (16258787).

164647600849 is a wasteful number, since it uses less digits than its factorization.

164647600849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16258786.

The product of its (nonzero) digits is 6967296, while the sum is 55.

The spelling of 164647600849 in words is "one hundred sixty-four billion, six hundred forty-seven million, six hundred thousand, eight hundred forty-nine".