1864686404036 has 24 divisors (see below), whose sum is σ = 3342927782040. Its totient is φ = 909566035200.

The previous prime is 1864686403961. The next prime is 1864686404041. The reversal of 1864686404036 is 6304046864681.

It can be written as a sum of positive squares in 4 ways, for example, as 200730880900 + 1663955523136 = 448030^2 + 1289944^2 .

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 4042070 + ... + 4479698.

It is an arithmetic number, because the mean of its divisors is an integer number (139288657585).

Almost surely, 2^{1864686404036} is an apocalyptic number.

It is an amenable number.

1864686404036 is a deficient number, since it is larger than the sum of its proper divisors (1478241378004).

1864686404036 is a wasteful number, since it uses less digits than its factorization.

1864686404036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463655 (or 463653 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 56.

The spelling of 1864686404036 in words is "one trillion, eight hundred sixty-four billion, six hundred eighty-six million, four hundred four thousand, thirty-six".