2135456537 has 2 divisors, whose sum is σ = 2135456538. Its totient is φ = 2135456536.

The previous prime is 2135456509. The next prime is 2135456539. The reversal of 2135456537 is 7356545312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2135456521 + 16 = 46211^2 + 4^2 .

It is a cyclic number.

It is not a de Polignac number, because 2135456537 - 2⁶ = 2135456473 is a prime.

Together with 2135456539, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2135456494 and 2135456503.

It is not a weakly prime, because it can be changed into another prime (2135456539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067728268 + 1067728269.

It is an arithmetic number, because the mean of its divisors is an integer number (1067728269).

Almost surely, 2^2135456537 is an apocalyptic number.

It is an amenable number.

2135456537 is a deficient number, since it is larger than the sum of its proper divisors (1).

2135456537 is an equidigital number, since it uses as much as digits as its factorization.

2135456537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 378000, while the sum is 41.

The square root of 2135456537 is about 46211.0001731190. Note that the first 3 decimals coincide. The cubic root of 2135456537 is about 1287.7461067474.

The spelling of 2135456537 in words is "two billion, one hundred thirty-five million, four hundred fifty-six thousand, five hundred thirty-seven".