3642257243 has 2 divisors, whose sum is σ = 3642257244. Its totient is φ = 3642257242.

The previous prime is 3642257221. The next prime is 3642257273. The reversal of 3642257243 is 3427522463.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3642257243 is a prime.

It is a super-2 number, since 2×3642257243² = 26532075648371922098, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3642257197 and 3642257206.

It is not a weakly prime, because it can be changed into another prime (3642257273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1821128621 + 1821128622.

It is an arithmetic number, because the mean of its divisors is an integer number (1821128622).

Almost surely, 2^3642257243 is an apocalyptic number.

3642257243 is a deficient number, since it is larger than the sum of its proper divisors (1).

3642257243 is an equidigital number, since it uses as much as digits as its factorization.

3642257243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 38.

The square root of 3642257243 is about 60351.1163359884. The cubic root of 3642257243 is about 1538.5922429255.

The spelling of 3642257243 in words is "three billion, six hundred forty-two million, two hundred fifty-seven thousand, two hundred forty-three".