3128164901 has 4 divisors (see below), whose sum is σ = 3128390892. Its totient is φ = 3127938912.

The previous prime is 3128164859. The next prime is 3128164913. The reversal of 3128164901 is 1094618213.

It is a Cunningham number, because it is equal to 55930²+1.

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 931836676 + 2196328225 = 30526^2 + 46865^2 .

It is a cyclic number.

It is not a de Polignac number, because 3128164901 - 2¹⁰ = 3128163877 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 (3128104901) 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 3 ways as a sum of consecutive naturals, for example, 90776 + ... + 120401.

It is an arithmetic number, because the mean of its divisors is an integer number (782097723).

Almost surely, 2^3128164901 is an apocalyptic number.

It is an amenable number.

3128164901 is a deficient number, since it is larger than the sum of its proper divisors (225991).

3128164901 is a wasteful number, since it uses less digits than its factorization.

3128164901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225990.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 3128164901 is about 55930.0000089397. Note that the first 5 decimals coincide. The cubic root of 3128164901 is about 1462.5022613353.

The spelling of 3128164901 in words is "three billion, one hundred twenty-eight million, one hundred sixty-four thousand, nine hundred one".