4028130109 has 4 divisors (see below), whose sum is σ = 4028524704. Its totient is φ = 4027735516.

The previous prime is 4028130101. The next prime is 4028130143. The reversal of 4028130109 is 9010318204.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4028130109 - 2³ = 4028130101 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 (4028130101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 181567 + ... + 202540.

It is an arithmetic number, because the mean of its divisors is an integer number (1007131176).

Almost surely, 2^4028130109 is an apocalyptic number.

It is an amenable number.

4028130109 is a deficient number, since it is larger than the sum of its proper divisors (394595).

4028130109 is a wasteful number, since it uses less digits than its factorization.

4028130109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394594.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 4028130109 is about 63467.5516228569. The cubic root of 4028130109 is about 1591.1135099186.

The spelling of 4028130109 in words is "four billion, twenty-eight million, one hundred thirty thousand, one hundred nine".