9151009081 has 2 divisors, whose sum is σ = 9151009082. Its totient is φ = 9151009080.

The previous prime is 9151009027. The next prime is 9151009111. The reversal of 9151009081 is 1809001519.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4916253456 + 4234755625 = 70116^2 + 65075^2 .

It is a cyclic number.

It is not a de Polignac number, because 9151009081 - 2¹³ = 9151000889 is a prime.

It is a super-2 number, since 2×9151009081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9151009481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4575504540 + 4575504541.

It is an arithmetic number, because the mean of its divisors is an integer number (4575504541).

Almost surely, 2^9151009081 is an apocalyptic number.

It is an amenable number.

9151009081 is a deficient number, since it is larger than the sum of its proper divisors (1).

9151009081 is an equidigital number, since it uses as much as digits as its factorization.

9151009081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 34.

The square root of 9151009081 is about 95660.9067540132. The cubic root of 9151009081 is about 2091.6531170571.

The spelling of 9151009081 in words is "nine billion, one hundred fifty-one million, nine thousand, eighty-one".