164092861 has 4 divisors (see below), whose sum is σ = 164685532. Its totient is φ = 163500192.

The previous prime is 164092853. The next prime is 164092871. The reversal of 164092861 is 168290461.

It is a happy number.

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 25300900 + 138791961 = 5030^2 + 11781^2 .

It is a cyclic number.

It is not a de Polignac number, because 164092861 - 2³ = 164092853 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 164092861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164092871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295920 + ... + 296473.

It is an arithmetic number, because the mean of its divisors is an integer number (41171383).

Almost surely, 2^164092861 is an apocalyptic number.

It is an amenable number.

164092861 is a deficient number, since it is larger than the sum of its proper divisors (592671).

164092861 is an equidigital number, since it uses as much as digits as its factorization.

164092861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592670.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 164092861 is about 12809.8735747079. The cubic root of 164092861 is about 547.4736596934.

The spelling of 164092861 in words is "one hundred sixty-four million, ninety-two thousand, eight hundred sixty-one".