2144305997 has 2 divisors, whose sum is σ = 2144305998. Its totient is φ = 2144305996.

The previous prime is 2144305987. The next prime is 2144306093. The reversal of 2144305997 is 7995034412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1995319561 + 148986436 = 44669^2 + 12206^2 .

It is a cyclic number.

It is not a de Polignac number, because 2144305997 - 2²⁸ = 1875870541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2144305937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072152998 + 1072152999.

It is an arithmetic number, because the mean of its divisors is an integer number (1072152999).

Almost surely, 2^2144305997 is an apocalyptic number.

It is an amenable number.

2144305997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2144305997 is an equidigital number, since it uses as much as digits as its factorization.

2144305997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 2144305997 is about 46306.6517576039. The cubic root of 2144305997 is about 1289.5224875666.

The spelling of 2144305997 in words is "two billion, one hundred forty-four million, three hundred five thousand, nine hundred ninety-seven".