4263949189 has 2 divisors, whose sum is σ = 4263949190. Its totient is φ = 4263949188.

The previous prime is 4263949177. The next prime is 4263949237. The reversal of 4263949189 is 9819493624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2644530625 + 1619418564 = 51425^2 + 40242^2 .

It is a cyclic number.

It is not a de Polignac number, because 4263949189 - 2¹¹ = 4263947141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4263949169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2131974594 + 2131974595.

It is an arithmetic number, because the mean of its divisors is an integer number (2131974595).

Almost surely, 2^4263949189 is an apocalyptic number.

It is an amenable number.

4263949189 is a deficient number, since it is larger than the sum of its proper divisors (1).

4263949189 is an equidigital number, since it uses as much as digits as its factorization.

4263949189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3359232, while the sum is 55.

The square root of 4263949189 is about 65298.9218058001. The cubic root of 4263949189 is about 1621.5761205211.

The spelling of 4263949189 in words is "four billion, two hundred sixty-three million, nine hundred forty-nine thousand, one hundred eighty-nine".