164137645 has 16 divisors (see below), whose sum is σ = 226752768. Its totient is φ = 111726720.

The previous prime is 164137643. The next prime is 164137657. The reversal of 164137645 is 546731461.

It is not a de Polignac number, because 164137645 - 2¹ = 164137643 is a prime.

It is a super-3 number, since 3×164137645³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164137643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12321 + ... + 21910.

It is an arithmetic number, because the mean of its divisors is an integer number (14172048).

Almost surely, 2^164137645 is an apocalyptic number.

It is an amenable number.

164137645 is a deficient number, since it is larger than the sum of its proper divisors (62615123).

164137645 is a wasteful number, since it uses less digits than its factorization.

164137645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34380.

The product of its digits is 60480, while the sum is 37.

The square root of 164137645 is about 12811.6214820763. The cubic root of 164137645 is about 547.5234604182.

The spelling of 164137645 in words is "one hundred sixty-four million, one hundred thirty-seven thousand, six hundred forty-five".