9956036491 has 2 divisors, whose sum is σ = 9956036492. Its totient is φ = 9956036490.

The previous prime is 9956036471. The next prime is 9956036507. The reversal of 9956036491 is 1946306599.

9956036491 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9956036491 - 2¹⁵ = 9956003723 is a prime.

It is a super-2 number, since 2×9956036491² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9956036401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4978018245 + 4978018246.

It is an arithmetic number, because the mean of its divisors is an integer number (4978018246).

Almost surely, 2^9956036491 is an apocalyptic number.

9956036491 is a deficient number, since it is larger than the sum of its proper divisors (1).

9956036491 is an equidigital number, since it uses as much as digits as its factorization.

9956036491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1574640, while the sum is 52.

The square root of 9956036491 is about 99779.9403236943. The cubic root of 9956036491 is about 2151.2728349908.

The spelling of 9956036491 in words is "nine billion, nine hundred fifty-six million, thirty-six thousand, four hundred ninety-one".