2145140993 has 2 divisors, whose sum is σ = 2145140994. Its totient is φ = 2145140992.

The previous prime is 2145140953. The next prime is 2145140999. The reversal of 2145140993 is 3990415412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1188043024 + 957097969 = 34468^2 + 30937^2 .

It is a cyclic number.

It is not a de Polignac number, because 2145140993 - 2¹² = 2145136897 is a prime.

It is not a weakly prime, because it can be changed into another prime (2145140999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072570496 + 1072570497.

It is an arithmetic number, because the mean of its divisors is an integer number (1072570497).

Almost surely, 2^2145140993 is an apocalyptic number.

It is an amenable number.

2145140993 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145140993 is an equidigital number, since it uses as much as digits as its factorization.

2145140993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 2145140993 is about 46315.6668202024. Note that the first 3 decimals coincide. The cubic root of 2145140993 is about 1289.6898465145.

The spelling of 2145140993 in words is "two billion, one hundred forty-five million, one hundred forty thousand, nine hundred ninety-three".