1057811687 has 2 divisors, whose sum is σ = 1057811688. Its totient is φ = 1057811686.

The previous prime is 1057811647. The next prime is 1057811701. The reversal of 1057811687 is 7861187501.

It is a strong prime.

It is an emirp because it is prime and its reverse (7861187501) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1057811687 is a prime.

It is a super-2 number, since 2×1057811687² = 2237931130307571938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1057811617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528905843 + 528905844.

It is an arithmetic number, because the mean of its divisors is an integer number (528905844).

Almost surely, 2^1057811687 is an apocalyptic number.

1057811687 is a deficient number, since it is larger than the sum of its proper divisors (1).

1057811687 is an equidigital number, since it uses as much as digits as its factorization.

1057811687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 44.

The square root of 1057811687 is about 32524.0170796905. The cubic root of 1057811687 is about 1018.9106937501.

The spelling of 1057811687 in words is "one billion, fifty-seven million, eight hundred eleven thousand, six hundred eighty-seven".