164028383687 has 4 divisors (see below), whose sum is σ = 187461009936. Its totient is φ = 140595757440.

The previous prime is 164028383681. The next prime is 164028383689. The reversal of 164028383687 is 786383820461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 786383820461 = 263521 ⋅2984141.

It is a cyclic number.

It is not a de Polignac number, because 164028383687 - 2⁴ = 164028383671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164028383681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11716313114 + ... + 11716313127.

It is an arithmetic number, because the mean of its divisors is an integer number (46865252484).

Almost surely, 2^164028383687 is an apocalyptic number.

164028383687 is a deficient number, since it is larger than the sum of its proper divisors (23432626249).

164028383687 is an equidigital number, since it uses as much as digits as its factorization.

164028383687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23432626248.

The product of its (nonzero) digits is 9289728, while the sum is 56.

The spelling of 164028383687 in words is "one hundred sixty-four billion, twenty-eight million, three hundred eighty-three thousand, six hundred eighty-seven".