2491228307 has 2 divisors, whose sum is σ = 2491228308. Its totient is φ = 2491228306.

The previous prime is 2491228283. The next prime is 2491228321. The reversal of 2491228307 is 7038221942.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2491228307 - 2²² = 2487034003 is a prime.

It is not a weakly prime, because it can be changed into another prime (2491228357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1245614153 + 1245614154.

It is an arithmetic number, because the mean of its divisors is an integer number (1245614154).

Almost surely, 2^2491228307 is an apocalyptic number.

2491228307 is a deficient number, since it is larger than the sum of its proper divisors (1).

2491228307 is an equidigital number, since it uses as much as digits as its factorization.

2491228307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 2491228307 is about 49912.2059921218. The cubic root of 2491228307 is about 1355.6196123200.

The spelling of 2491228307 in words is "two billion, four hundred ninety-one million, two hundred twenty-eight thousand, three hundred seven".