2145741613 has 2 divisors, whose sum is σ = 2145741614. Its totient is φ = 2145741612.

The previous prime is 2145741607. The next prime is 2145741641. The reversal of 2145741613 is 3161475412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1586986569 + 558755044 = 39837^2 + 23638^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2145741613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2145741313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072870806 + 1072870807.

It is an arithmetic number, because the mean of its divisors is an integer number (1072870807).

Almost surely, 2^2145741613 is an apocalyptic number.

It is an amenable number.

2145741613 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145741613 is an equidigital number, since it uses as much as digits as its factorization.

2145741613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 34.

The square root of 2145741613 is about 46322.1503494818. The cubic root of 2145741613 is about 1289.8102024312.

The spelling of 2145741613 in words is "two billion, one hundred forty-five million, seven hundred forty-one thousand, six hundred thirteen".