3785436385 has 4 divisors (see below), whose sum is σ = 4542523668. Its totient is φ = 3028349104.

The previous prime is 3785436341. The next prime is 3785436419. The reversal of 3785436385 is 5836345873.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2999643361 + 785793024 = 54769^2 + 28032^2 .

It is a cyclic number.

It is not a de Polignac number, because 3785436385 - 2¹³ = 3785428193 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378543634 + ... + 378543643.

It is an arithmetic number, because the mean of its divisors is an integer number (1135630917).

Almost surely, 2^3785436385 is an apocalyptic number.

It is an amenable number.

3785436385 is a deficient number, since it is larger than the sum of its proper divisors (757087283).

3785436385 is an equidigital number, since it uses as much as digits as its factorization.

3785436385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757087282.

The product of its digits is 7257600, while the sum is 52.

The square root of 3785436385 is about 61525.9001153173. The cubic root of 3785436385 is about 1558.4946558247.

The spelling of 3785436385 in words is "three billion, seven hundred eighty-five million, four hundred thirty-six thousand, three hundred eighty-five".