9038985251 has 2 divisors, whose sum is σ = 9038985252. Its totient is φ = 9038985250.

The previous prime is 9038985229. The next prime is 9038985287. The reversal of 9038985251 is 1525898309.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9038985251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9038985251.

It is not a weakly prime, because it can be changed into another prime (9038981251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4519492625 + 4519492626.

It is an arithmetic number, because the mean of its divisors is an integer number (4519492626).

Almost surely, 2^9038985251 is an apocalyptic number.

9038985251 is a deficient number, since it is larger than the sum of its proper divisors (1).

9038985251 is an equidigital number, since it uses as much as digits as its factorization.

9038985251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 50.

The square root of 9038985251 is about 95073.5780908660. The cubic root of 9038985251 is about 2083.0829260691.

The spelling of 9038985251 in words is "nine billion, thirty-eight million, nine hundred eighty-five thousand, two hundred fifty-one".