11651963 has 2 divisors, whose sum is σ = 11651964. Its totient is φ = 11651962.

The previous prime is 11651957. The next prime is 11651977. The reversal of 11651963 is 36915611.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11651963 - 2¹⁴ = 11635579 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (11651923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5825981 + 5825982.

It is an arithmetic number, because the mean of its divisors is an integer number (5825982).

Almost surely, 2^11651963 is an apocalyptic number.

11651963 is a deficient number, since it is larger than the sum of its proper divisors (1).

11651963 is an equidigital number, since it uses as much as digits as its factorization.

11651963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4860, while the sum is 32.

The square root of 11651963 is about 3413.4971803123. The cubic root of 11651963 is about 226.7077494258.

The spelling of 11651963 in words is "eleven million, six hundred fifty-one thousand, nine hundred sixty-three".