30490637 has 2 divisors, whose sum is σ = 30490638. Its totient is φ = 30490636.

The previous prime is 30490591. The next prime is 30490651. The reversal of 30490637 is 73609403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20967241 + 9523396 = 4579^2 + 3086^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30490637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30490657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15245318 + 15245319.

It is an arithmetic number, because the mean of its divisors is an integer number (15245319).

Almost surely, 2^30490637 is an apocalyptic number.

It is an amenable number.

30490637 is a deficient number, since it is larger than the sum of its proper divisors (1).

30490637 is an equidigital number, since it uses as much as digits as its factorization.

30490637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 32.

The square root of 30490637 is about 5521.8327573370. The cubic root of 30490637 is about 312.4080138860.

The spelling of 30490637 in words is "thirty million, four hundred ninety thousand, six hundred thirty-seven".