2131858541 has 2 divisors, whose sum is σ = 2131858542. Its totient is φ = 2131858540.

The previous prime is 2131858517. The next prime is 2131858559. The reversal of 2131858541 is 1458581312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1968785641 + 163072900 = 44371^2 + 12770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2131858541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2131858495 and 2131858504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2131858511) 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, 1065929270 + 1065929271.

It is an arithmetic number, because the mean of its divisors is an integer number (1065929271).

Almost surely, 2^2131858541 is an apocalyptic number.

It is an amenable number.

2131858541 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131858541 is an equidigital number, since it uses as much as digits as its factorization.

2131858541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38400, while the sum is 38.

The square root of 2131858541 is about 46172.0536796881. The cubic root of 2131858541 is about 1287.0224660188.

The spelling of 2131858541 in words is "two billion, one hundred thirty-one million, eight hundred fifty-eight thousand, five hundred forty-one".