30836749 has 2 divisors, whose sum is σ = 30836750. Its totient is φ = 30836748.

The previous prime is 30836737. The next prime is 30836761. The reversal of 30836749 is 94763803.

It is a balanced prime because it is at equal distance from previous prime (30836737) and next prime (30836761).

It can be written as a sum of positive squares in only one way, i.e., 29920900 + 915849 = 5470^2 + 957^2 .

It is a cyclic number.

It is not a de Polignac number, because 30836749 - 2⁷ = 30836621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30836779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15418374 + 15418375.

It is an arithmetic number, because the mean of its divisors is an integer number (15418375).

Almost surely, 2^30836749 is an apocalyptic number.

It is an amenable number.

30836749 is a deficient number, since it is larger than the sum of its proper divisors (1).

30836749 is an equidigital number, since it uses as much as digits as its factorization.

30836749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 30836749 is about 5553.0846382889. The cubic root of 30836749 is about 313.5856605109.

The spelling of 30836749 in words is "thirty million, eight hundred thirty-six thousand, seven hundred forty-nine".