1234863685 has 12 divisors (see below), whose sum is σ = 1628796204. Its totient is φ = 898082240.

The previous prime is 1234863683. The next prime is 1234863689. The reversal of 1234863685 is 5863684321.

It can be written as a sum of positive squares in 2 ways, for example, as 816702084 + 418161601 = 28578^2 + 20449^2 .

It is not a de Polignac number, because 1234863685 - 2¹ = 1234863683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234863683) 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 in 11 ways as a sum of consecutive naturals, for example, 1019944 + ... + 1021153.

It is an arithmetic number, because the mean of its divisors is an integer number (135733017).

Almost surely, 2^1234863685 is an apocalyptic number.

It is an amenable number.

1234863685 is a deficient number, since it is larger than the sum of its proper divisors (393932519).

1234863685 is a wasteful number, since it uses less digits than its factorization.

1234863685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2041124 (or 2041113 counting only the distinct ones).

The product of its digits is 829440, while the sum is 46.

The square root of 1234863685 is about 35140.6272710093. The cubic root of 1234863685 is about 1072.8516488798.

The spelling of 1234863685 in words is "one billion, two hundred thirty-four million, eight hundred sixty-three thousand, six hundred eighty-five".