1171963651 has 2 divisors, whose sum is σ = 1171963652. Its totient is φ = 1171963650.

The previous prime is 1171963621. The next prime is 1171963673. The reversal of 1171963651 is 1563691711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1171963651 - 2⁹ = 1171963139 is a prime.

It is not a weakly prime, because it can be changed into another prime (1171963601) 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, 585981825 + 585981826.

It is an arithmetic number, because the mean of its divisors is an integer number (585981826).

Almost surely, 2^1171963651 is an apocalyptic number.

1171963651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1171963651 is an equidigital number, since it uses as much as digits as its factorization.

1171963651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 40.

The square root of 1171963651 is about 34233.9546503176. The cubic root of 1171963651 is about 1054.3174162543.

The spelling of 1171963651 in words is "one billion, one hundred seventy-one million, nine hundred sixty-three thousand, six hundred fifty-one".