491614243 has 2 divisors, whose sum is σ = 491614244.
Its totient is φ = 491614242.
The previous prime is 491614217. The next prime is 491614271. The reversal of 491614243 is 342416194.
It is a weak prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-491614243 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 491614199 and 491614208.
It is not a weakly prime, because it can be changed into another prime (491614283) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245807121 + 245807122.
It is an arithmetic number, because the mean of its divisors is an integer number (245807122).
Almost surely, 2491614243 is an apocalyptic number.
491614243 is a deficient number, since it is larger than the sum of its proper divisors (1).
491614243 is an equidigital number, since it uses as much as digits as its factorization.
491614243 is an evil number, because the sum of its binary digits is even.
The product of its digits is 20736, while the sum is 34.
The square root of 491614243 is about 22172.3756733463.
The cubic root of 491614243 is about 789.2382996302.
The spelling of 491614243 in words is "four hundred ninety-one million, six hundred fourteen thousand, two hundred forty-three".