4156231109 has 2 divisors, whose sum is σ = 4156231110. Its totient is φ = 4156231108.

The previous prime is 4156231099. The next prime is 4156231139. The reversal of 4156231109 is 9011326514.

4156231109 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4047758884 + 108472225 = 63622^2 + 10415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4156231109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4156231139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2078115554 + 2078115555.

It is an arithmetic number, because the mean of its divisors is an integer number (2078115555).

Almost surely, 2^4156231109 is an apocalyptic number.

It is an amenable number.

4156231109 is a deficient number, since it is larger than the sum of its proper divisors (1).

4156231109 is an equidigital number, since it uses as much as digits as its factorization.

4156231109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 4156231109 is about 64468.8382786599. The cubic root of 4156231109 is about 1607.8044619050.

The spelling of 4156231109 in words is "four billion, one hundred fifty-six million, two hundred thirty-one thousand, one hundred nine".