9249561901 has 2 divisors, whose sum is σ = 9249561902. Its totient is φ = 9249561900.

The previous prime is 9249561877. The next prime is 9249561907. The reversal of 9249561901 is 1091659429.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9015502500 + 234059401 = 94950^2 + 15299^2 .

It is a cyclic number.

It is not a de Polignac number, because 9249561901 - 2¹¹ = 9249559853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9249561907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4624780950 + 4624780951.

It is an arithmetic number, because the mean of its divisors is an integer number (4624780951).

Almost surely, 2^9249561901 is an apocalyptic number.

It is an amenable number.

9249561901 is a deficient number, since it is larger than the sum of its proper divisors (1).

9249561901 is an equidigital number, since it uses as much as digits as its factorization.

9249561901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174960, while the sum is 46.

The square root of 9249561901 is about 96174.6427131393. The cubic root of 9249561901 is about 2099.1350860746.

The spelling of 9249561901 in words is "nine billion, two hundred forty-nine million, five hundred sixty-one thousand, nine hundred one".