3681018285604 has 81 divisors (see below), whose sum is σ = 7280265872019. Its totient is φ = 1627278079680.

The previous prime is 3681018285583. The next prime is 3681018285629. The reversal of 3681018285604 is 4065828101863.

It is a happy number.

The square root of 3681018285604 is 1918598.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 44521844004 + 3636496441600 = 211002^2 + 1906960^2 .

It is a super-2 number, since 2×3681018285604² (a number of 26 digits) contains 22 as substring.

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 26 ways as a sum of consecutive naturals, for example, 1561737594 + ... + 1561739950.

Almost surely, 2^{3681018285604} is an apocalyptic number.

3681018285604 is the 1918598-th square number.

It is an amenable number.

3681018285604 is a deficient number, since it is larger than the sum of its proper divisors (3599247586415).

3681018285604 is an equidigital number, since it uses as much as digits as its factorization.

3681018285604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4814 (or 2407 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 52.

The spelling of 3681018285604 in words is "three trillion, six hundred eighty-one billion, eighteen million, two hundred eighty-five thousand, six hundred four".