2145512393 has 2 divisors, whose sum is σ = 2145512394. Its totient is φ = 2145512392.

The previous prime is 2145512339. The next prime is 2145512419. The reversal of 2145512393 is 3932155412.

Together with previous prime (2145512339) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1234257424 + 911254969 = 35132^2 + 30187^2 .

It is a cyclic number.

It is not a de Polignac number, because 2145512393 - 2⁸ = 2145512137 is a prime.

It is not a weakly prime, because it can be changed into another prime (2145512333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072756196 + 1072756197.

It is an arithmetic number, because the mean of its divisors is an integer number (1072756197).

Almost surely, 2^2145512393 is an apocalyptic number.

It is an amenable number.

2145512393 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145512393 is an equidigital number, since it uses as much as digits as its factorization.

2145512393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 35.

The square root of 2145512393 is about 46319.6760891093. The cubic root of 2145512393 is about 1289.7642725732.

The spelling of 2145512393 in words is "two billion, one hundred forty-five million, five hundred twelve thousand, three hundred ninety-three".