4243251641 has 2 divisors, whose sum is σ = 4243251642. Its totient is φ = 4243251640.

The previous prime is 4243251631. The next prime is 4243251673. The reversal of 4243251641 is 1461523424.

It is an a-pointer prime, because the next prime (4243251673) can be obtained adding 4243251641 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4243219600 + 32041 = 65140^2 + 179^2 .

It is a cyclic number.

It is not a de Polignac number, because 4243251641 - 2²² = 4239057337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4243251598 and 4243251607.

It is not a weakly prime, because it can be changed into another prime (4243251611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2121625820 + 2121625821.

It is an arithmetic number, because the mean of its divisors is an integer number (2121625821).

Almost surely, 2^4243251641 is an apocalyptic number.

It is an amenable number.

4243251641 is a deficient number, since it is larger than the sum of its proper divisors (1).

4243251641 is an equidigital number, since it uses as much as digits as its factorization.

4243251641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 32.

The square root of 4243251641 is about 65140.2459390506. The cubic root of 4243251641 is about 1618.9481106429.

The spelling of 4243251641 in words is "four billion, two hundred forty-three million, two hundred fifty-one thousand, six hundred forty-one".