1881963011 has 2 divisors, whose sum is σ = 1881963012. Its totient is φ = 1881963010.

The previous prime is 1881962993. The next prime is 1881963047. The reversal of 1881963011 is 1103691881.

It is a weak prime.

It is an emirp because it is prime and its reverse (1103691881) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1881963011 is a prime.

It is a super-2 number, since 2×1881963011² = 7083569549544372242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1881963211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 940981505 + 940981506.

It is an arithmetic number, because the mean of its divisors is an integer number (940981506).

Almost surely, 2^1881963011 is an apocalyptic number.

1881963011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1881963011 is an equidigital number, since it uses as much as digits as its factorization.

1881963011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 38.

The square root of 1881963011 is about 43381.5976077415. The cubic root of 1881963011 is about 1234.6305748137.

The spelling of 1881963011 in words is "one billion, eight hundred eighty-one million, nine hundred sixty-three thousand, eleven".