9156381697 has 2 divisors, whose sum is σ = 9156381698. Its totient is φ = 9156381696.

The previous prime is 9156381643. The next prime is 9156381701. The reversal of 9156381697 is 7961836519.

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., 6291027856 + 2865353841 = 79316^2 + 53529^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9156381697 is a prime.

It is not a weakly prime, because it can be changed into another prime (9156381617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4578190848 + 4578190849.

It is an arithmetic number, because the mean of its divisors is an integer number (4578190849).

Almost surely, 2^9156381697 is an apocalyptic number.

It is an amenable number.

9156381697 is a deficient number, since it is larger than the sum of its proper divisors (1).

9156381697 is an equidigital number, since it uses as much as digits as its factorization.

9156381697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2449440, while the sum is 55.

The square root of 9156381697 is about 95688.9841988094. The cubic root of 9156381697 is about 2092.0623779517.

It can be divided in two parts, 915638 and 1697, that added together give a triangular number (917335 = T₁₃₅₄).

The spelling of 9156381697 in words is "nine billion, one hundred fifty-six million, three hundred eighty-one thousand, six hundred ninety-seven".