1085947637 has 2 divisors, whose sum is σ = 1085947638. Its totient is φ = 1085947636.

The previous prime is 1085947633. The next prime is 1085947711. The reversal of 1085947637 is 7367495801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1024576081 + 61371556 = 32009^2 + 7834^2 .

It is a cyclic number.

It is not a de Polignac number, because 1085947637 - 2² = 1085947633 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1085947631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 542973818 + 542973819.

It is an arithmetic number, because the mean of its divisors is an integer number (542973819).

Almost surely, 2^1085947637 is an apocalyptic number.

It is an amenable number.

1085947637 is a deficient number, since it is larger than the sum of its proper divisors (1).

1085947637 is an equidigital number, since it uses as much as digits as its factorization.

1085947637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The square root of 1085947637 is about 32953.7196231321. The cubic root of 1085947637 is about 1027.8655131112.

The spelling of 1085947637 in words is "one billion, eighty-five million, nine hundred forty-seven thousand, six hundred thirty-seven".