2258721407 has 2 divisors, whose sum is σ = 2258721408. Its totient is φ = 2258721406.

The previous prime is 2258721391. The next prime is 2258721419. The reversal of 2258721407 is 7041278522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2258721407 - 2⁴ = 2258721391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2258721457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1129360703 + 1129360704.

It is an arithmetic number, because the mean of its divisors is an integer number (1129360704).

Almost surely, 2^2258721407 is an apocalyptic number.

2258721407 is a deficient number, since it is larger than the sum of its proper divisors (1).

2258721407 is an equidigital number, since it uses as much as digits as its factorization.

2258721407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62720, while the sum is 38.

The square root of 2258721407 is about 47526.0076905267. The cubic root of 2258721407 is about 1312.0615921954.

Adding to 2258721407 its reverse (7041278522), we get a palindrome (9299999929).

The spelling of 2258721407 in words is "two billion, two hundred fifty-eight million, seven hundred twenty-one thousand, four hundred seven".