164388891606 has 16 divisors (see below), whose sum is σ = 329175347904. Its totient is φ = 54730036424.

The previous prime is 164388891593. The next prime is 164388891607. The reversal of 164388891606 is 606198883461.

164388891606 = 202723² + 202724² + ... + 202726².

It is a self number, because there is not a number n which added to its sum of digits gives 164388891606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164388891607) 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, 16559820 + ... + 16569743.

It is an arithmetic number, because the mean of its divisors is an integer number (20573459244).

Almost surely, 2^164388891606 is an apocalyptic number.

164388891606 is an abundant number, since it is smaller than the sum of its proper divisors (164786456298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164388891606 is a wasteful number, since it uses less digits than its factorization.

164388891606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33130395.

The product of its (nonzero) digits is 11943936, while the sum is 60.

The spelling of 164388891606 in words is "one hundred sixty-four billion, three hundred eighty-eight million, eight hundred ninety-one thousand, six hundred six".