3775918385 has 8 divisors (see below), whose sum is σ = 4537060776. Its totient is φ = 3016762240.

The previous prime is 3775918369. The next prime is 3775918409. The reversal of 3775918385 is 5838195773.

It is a happy number.

3775918385 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 69422224 + 3706496161 = 8332^2 + 60881^2 .

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

It is not a de Polignac number, because 3775918385 - 2⁴ = 3775918369 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3775918385.

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, 492374 + ... + 499983.

It is an arithmetic number, because the mean of its divisors is an integer number (567132597).

Almost surely, 2^3775918385 is an apocalyptic number.

It is an amenable number.

3775918385 is a deficient number, since it is larger than the sum of its proper divisors (761142391).

3775918385 is an equidigital number, since it uses as much as digits as its factorization.

3775918385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993123.

The product of its digits is 6350400, while the sum is 56.

The square root of 3775918385 is about 61448.5018938623. The cubic root of 3775918385 is about 1557.1873470982.

The spelling of 3775918385 in words is "three billion, seven hundred seventy-five million, nine hundred eighteen thousand, three hundred eighty-five".