2145140999 has 2 divisors, whose sum is σ = 2145141000. Its totient is φ = 2145140998.

The previous prime is 2145140993. The next prime is 2145141071. The reversal of 2145140999 is 9990415412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2145140999 - 2¹⁶ = 2145075463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2145140993) 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, 1072570499 + 1072570500.

It is an arithmetic number, because the mean of its divisors is an integer number (1072570500).

Almost surely, 2^2145140999 is an apocalyptic number.

2145140999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145140999 is an equidigital number, since it uses as much as digits as its factorization.

2145140999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 2145140999 is about 46315.6668849753. Note that the first 3 decimals coincide. The cubic root of 2145140999 is about 1289.6898477170.

The spelling of 2145140999 in words is "two billion, one hundred forty-five million, one hundred forty thousand, nine hundred ninety-nine".