2115406541 has 2 divisors, whose sum is σ = 2115406542. Its totient is φ = 2115406540.

The previous prime is 2115406523. The next prime is 2115406561. The reversal of 2115406541 is 1456045112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2107728100 + 7678441 = 45910^2 + 2771^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2115406541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2115406511) 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, 1057703270 + 1057703271.

It is an arithmetic number, because the mean of its divisors is an integer number (1057703271).

Almost surely, 2^2115406541 is an apocalyptic number.

It is an amenable number.

2115406541 is a deficient number, since it is larger than the sum of its proper divisors (1).

2115406541 is an equidigital number, since it uses as much as digits as its factorization.

2115406541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 2115406541 is about 45993.5489063412. The cubic root of 2115406541 is about 1283.7031718843.

The spelling of 2115406541 in words is "two billion, one hundred fifteen million, four hundred six thousand, five hundred forty-one".