3785666251 has 8 divisors (see below), whose sum is σ = 3823752240. Its totient is φ = 3747735552.

The previous prime is 3785666249. The next prime is 3785666263. The reversal of 3785666251 is 1526665873.

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

It is a cyclic number.

It is not a de Polignac number, because 3785666251 - 2¹ = 3785666249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3785666195 and 3785666204.

It is not an unprimeable number, because it can be changed into a prime (3785666221) 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 in 7 ways as a sum of consecutive naturals, for example, 10491 + ... + 87643.

It is an arithmetic number, because the mean of its divisors is an integer number (477969030).

Almost surely, 2^3785666251 is an apocalyptic number.

3785666251 is a deficient number, since it is larger than the sum of its proper divisors (38085989).

3785666251 is a wasteful number, since it uses less digits than its factorization.

3785666251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77645.

The product of its digits is 1814400, while the sum is 49.

The square root of 3785666251 is about 61527.7681295202. The cubic root of 3785666251 is about 1558.5262010809.

The spelling of 3785666251 in words is "three billion, seven hundred eighty-five million, six hundred sixty-six thousand, two hundred fifty-one".