164078641 has 8 divisors (see below), whose sum is σ = 166013568. Its totient is φ = 162150000.

The previous prime is 164078639. The next prime is 164078653. The reversal of 164078641 is 146870461.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 164078641 - 2¹ = 164078639 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 164078641.

It is not an unprimeable number, because it can be changed into a prime (164078141) 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 7 ways as a sum of consecutive naturals, for example, 68616 + ... + 70966.

It is an arithmetic number, because the mean of its divisors is an integer number (20751696).

Almost surely, 2^164078641 is an apocalyptic number.

It is an amenable number.

164078641 is a deficient number, since it is larger than the sum of its proper divisors (1934927).

164078641 is a wasteful number, since it uses less digits than its factorization.

164078641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3143.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 164078641 is about 12809.3185220760. The cubic root of 164078641 is about 547.4578448670.

The spelling of 164078641 in words is "one hundred sixty-four million, seventy-eight thousand, six hundred forty-one".