1011881687 has 2 divisors, whose sum is σ = 1011881688. Its totient is φ = 1011881686.

The previous prime is 1011881627. The next prime is 1011881699. The reversal of 1011881687 is 7861881101.

1011881687 is digitally balanced in base 2, because in such base 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 1011881687 - 2¹⁶ = 1011816151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011881627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505940843 + 505940844.

It is an arithmetic number, because the mean of its divisors is an integer number (505940844).

Almost surely, 2^1011881687 is an apocalyptic number.

1011881687 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011881687 is an equidigital number, since it uses as much as digits as its factorization.

1011881687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 41.

The square root of 1011881687 is about 31810.0878181749. The cubic root of 1011881687 is about 1003.9449790089.

The spelling of 1011881687 in words is "one billion, eleven million, eight hundred eighty-one thousand, six hundred eighty-seven".