9128029961 has 2 divisors, whose sum is σ = 9128029962. Its totient is φ = 9128029960.

The previous prime is 9128029901. The next prime is 9128029969. The reversal of 9128029961 is 1699208219.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5231773561 + 3896256400 = 72331^2 + 62420^2 .

It is an emirp because it is prime and its reverse (1699208219) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9128029961 is a prime.

It is not a weakly prime, because it can be changed into another prime (9128029969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4564014980 + 4564014981.

It is an arithmetic number, because the mean of its divisors is an integer number (4564014981).

Almost surely, 2^9128029961 is an apocalyptic number.

It is an amenable number.

9128029961 is a deficient number, since it is larger than the sum of its proper divisors (1).

9128029961 is an equidigital number, since it uses as much as digits as its factorization.

9128029961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 47.

The square root of 9128029961 is about 95540.7240971095. The cubic root of 9128029961 is about 2089.9008645544.

The spelling of 9128029961 in words is "nine billion, one hundred twenty-eight million, twenty-nine thousand, nine hundred sixty-one".