9148000721 has 2 divisors, whose sum is σ = 9148000722. Its totient is φ = 9148000720.

The previous prime is 9148000709. The next prime is 9148000789. The reversal of 9148000721 is 1270008419.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8193870400 + 954130321 = 90520^2 + 30889^2 .

It is a cyclic number.

It is not a de Polignac number, because 9148000721 - 2¹⁴ = 9147984337 is a prime.

It is not a weakly prime, because it can be changed into another prime (9148000021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4574000360 + 4574000361.

It is an arithmetic number, because the mean of its divisors is an integer number (4574000361).

Almost surely, 2^9148000721 is an apocalyptic number.

It is an amenable number.

9148000721 is a deficient number, since it is larger than the sum of its proper divisors (1).

9148000721 is an equidigital number, since it uses as much as digits as its factorization.

9148000721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 9148000721 is about 95645.1813788860. The cubic root of 9148000721 is about 2091.4238842231.

The spelling of 9148000721 in words is "nine billion, one hundred forty-eight million, seven hundred twenty-one", and thus it is an aban number.