2106260389 has 2 divisors, whose sum is σ = 2106260390. Its totient is φ = 2106260388.

The previous prime is 2106260341. The next prime is 2106260423. The reversal of 2106260389 is 9830626012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1836808164 + 269452225 = 42858^2 + 16415^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2106260389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2106266389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1053130194 + 1053130195.

It is an arithmetic number, because the mean of its divisors is an integer number (1053130195).

Almost surely, 2^2106260389 is an apocalyptic number.

It is an amenable number.

2106260389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2106260389 is an equidigital number, since it uses as much as digits as its factorization.

2106260389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 2106260389 is about 45894.0125615532. The cubic root of 2106260389 is about 1281.8504301253.

The spelling of 2106260389 in words is "two billion, one hundred six million, two hundred sixty thousand, three hundred eighty-nine".