1965180011 has 2 divisors, whose sum is σ = 1965180012. Its totient is φ = 1965180010.

The previous prime is 1965179989. The next prime is 1965180031. The reversal of 1965180011 is 1100815691.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1965180011 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1965180011.

It is not a weakly prime, because it can be changed into another prime (1965180031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 982590005 + 982590006.

It is an arithmetic number, because the mean of its divisors is an integer number (982590006).

Almost surely, 2^1965180011 is an apocalyptic number.

1965180011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1965180011 is an equidigital number, since it uses as much as digits as its factorization.

1965180011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 32.

The square root of 1965180011 is about 44330.3509009347. The cubic root of 1965180011 is about 1252.5664626891.

The spelling of 1965180011 in words is "one billion, nine hundred sixty-five million, one hundred eighty thousand, eleven".