135903641 has 2 divisors, whose sum is σ = 135903642. Its totient is φ = 135903640.

The previous prime is 135903629. The next prime is 135903673. The reversal of 135903641 is 146309531.

It is an a-pointer prime, because the next prime (135903673) can be obtained adding 135903641 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84566416 + 51337225 = 9196^2 + 7165^2 .

It is a cyclic number.

It is not a de Polignac number, because 135903641 - 2⁶ = 135903577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135903598 and 135903607.

It is not a weakly prime, because it can be changed into another prime (135903841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67951820 + 67951821.

It is an arithmetic number, because the mean of its divisors is an integer number (67951821).

Almost surely, 2^135903641 is an apocalyptic number.

It is an amenable number.

135903641 is a deficient number, since it is larger than the sum of its proper divisors (1).

135903641 is an equidigital number, since it uses as much as digits as its factorization.

135903641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 135903641 is about 11657.7716996002. The cubic root of 135903641 is about 514.1348354543.

The spelling of 135903641 in words is "one hundred thirty-five million, nine hundred three thousand, six hundred forty-one".