3816787685 has 8 divisors (see below), whose sum is σ = 4580675736. Its totient is φ = 3053076480.

The previous prime is 3816787669. The next prime is 3816787717. The reversal of 3816787685 is 5867876183.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 93103201 + 3723684484 = 9649^2 + 61022^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3816787685 - 2⁴ = 3816787669 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9125 + ... + 87845.

It is an arithmetic number, because the mean of its divisors is an integer number (572584467).

Almost surely, 2^3816787685 is an apocalyptic number.

It is an amenable number.

3816787685 is a deficient number, since it is larger than the sum of its proper divisors (763888051).

3816787685 is an equidigital number, since it uses as much as digits as its factorization.

3816787685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88423.

The product of its digits is 13547520, while the sum is 59.

The square root of 3816787685 is about 61780.1560778216. The cubic root of 3816787685 is about 1562.7853598068.

The spelling of 3816787685 in words is "three billion, eight hundred sixteen million, seven hundred eighty-seven thousand, six hundred eighty-five".