3751666815 has 32 divisors (see below), whose sum is σ = 6542323200. Its totient is φ = 1824713856.

The previous prime is 3751666813. The next prime is 3751666817. The reversal of 3751666815 is 5186661573.

It is an interprime number because it is at equal distance from previous prime (3751666813) and next prime (3751666817).

It is not a de Polignac number, because 3751666815 - 2¹ = 3751666813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3751666813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99715 + ... + 132084.

It is an arithmetic number, because the mean of its divisors is an integer number (204447600).

Almost surely, 2^3751666815 is an apocalyptic number.

3751666815 is a deficient number, since it is larger than the sum of its proper divisors (2790656385).

3751666815 is a wasteful number, since it uses less digits than its factorization.

3751666815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231903.

The product of its digits is 907200, while the sum is 48.

The square root of 3751666815 is about 61250.8515451010. The cubic root of 3751666815 is about 1553.8464047362.

The spelling of 3751666815 in words is "three billion, seven hundred fifty-one million, six hundred sixty-six thousand, eight hundred fifteen".