3818051885 has 4 divisors (see below), whose sum is σ = 4581662268. Its totient is φ = 3054441504.

The previous prime is 3818051849. The next prime is 3818051953. The reversal of 3818051885 is 5881508183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5881508183 = 29 ⋅202810627.

It can be written as a sum of positive squares in 2 ways, for example, as 724578724 + 3093473161 = 26918^2 + 55619^2 .

It is a cyclic number.

It is not a de Polignac number, because 3818051885 - 2¹⁶ = 3817986349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 381805184 + ... + 381805193.

It is an arithmetic number, because the mean of its divisors is an integer number (1145415567).

Almost surely, 2^3818051885 is an apocalyptic number.

It is an amenable number.

3818051885 is a deficient number, since it is larger than the sum of its proper divisors (763610383).

3818051885 is an equidigital number, since it uses as much as digits as its factorization.

3818051885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763610382.

The product of its (nonzero) digits is 307200, while the sum is 47.

The square root of 3818051885 is about 61790.3866713909. The cubic root of 3818051885 is about 1562.9578831717.

The spelling of 3818051885 in words is "three billion, eight hundred eighteen million, fifty-one thousand, eight hundred eighty-five".