4431236149 has 2 divisors, whose sum is σ = 4431236150. Its totient is φ = 4431236148.

The previous prime is 4431236113. The next prime is 4431236177. The reversal of 4431236149 is 9416321344.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3174533649 + 1256702500 = 56343^2 + 35450^2 .

It is a cyclic number.

It is not a de Polignac number, because 4431236149 - 2⁷ = 4431236021 is a prime.

It is a super-3 number, since 3×4431236149³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4431236549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2215618074 + 2215618075.

It is an arithmetic number, because the mean of its divisors is an integer number (2215618075).

Almost surely, 2^4431236149 is an apocalyptic number.

It is an amenable number.

4431236149 is a deficient number, since it is larger than the sum of its proper divisors (1).

4431236149 is an equidigital number, since it uses as much as digits as its factorization.

4431236149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 37.

The square root of 4431236149 is about 66567.5307413457. The cubic root of 4431236149 is about 1642.5110438835.

The spelling of 4431236149 in words is "four billion, four hundred thirty-one million, two hundred thirty-six thousand, one hundred forty-nine".