3785522420 has 24 divisors (see below), whose sum is σ = 8028310248. Its totient is φ = 1499216000.

The previous prime is 3785522393. The next prime is 3785522431. The reversal of 3785522420 is 242255873.

It can be written as a sum of positive squares in 4 ways, for example, as 1295712016 + 2489810404 = 35996^2 + 49898^2 .

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 7 ways as a sum of consecutive naturals, for example, 934991 + ... + 939030.

It is an arithmetic number, because the mean of its divisors is an integer number (334512927).

Almost surely, 2^3785522420 is an apocalyptic number.

It is an amenable number.

3785522420 is an abundant number, since it is smaller than the sum of its proper divisors (4242787828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3785522420 is a wasteful number, since it uses less digits than its factorization.

3785522420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1874131 (or 1874129 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 38.

The square root of 3785522420 is about 61526.5992884378. The cubic root of 3785522420 is about 1558.5064628362.

The spelling of 3785522420 in words is "three billion, seven hundred eighty-five million, five hundred twenty-two thousand, four hundred twenty".