9145934621 has 2 divisors, whose sum is σ = 9145934622. Its totient is φ = 9145934620.

The previous prime is 9145934587. The next prime is 9145934641. The reversal of 9145934621 is 1264395419.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7698132121 + 1447802500 = 87739^2 + 38050^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9145934621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9145934641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4572967310 + 4572967311.

It is an arithmetic number, because the mean of its divisors is an integer number (4572967311).

Almost surely, 2^9145934621 is an apocalyptic number.

It is an amenable number.

9145934621 is a deficient number, since it is larger than the sum of its proper divisors (1).

9145934621 is an equidigital number, since it uses as much as digits as its factorization.

9145934621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 233280, while the sum is 44.

The square root of 9145934621 is about 95634.3799112014. The cubic root of 9145934621 is about 2091.2664211748.

The spelling of 9145934621 in words is "nine billion, one hundred forty-five million, nine hundred thirty-four thousand, six hundred twenty-one".