3835878642 has 12 divisors (see below), whose sum is σ = 8311070430. Its totient is φ = 1278626208.

The previous prime is 3835878619. The next prime is 3835878643. The reversal of 3835878642 is 2468785383.

It can be written as a sum of positive squares in only one way, i.e., 2844195561 + 991683081 = 53331^2 + 31491^2 .

It is not an unprimeable number, because it can be changed into a prime (3835878643) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 106552167 + ... + 106552202.

Almost surely, 2^3835878642 is an apocalyptic number.

3835878642 is an abundant number, since it is smaller than the sum of its proper divisors (4475191788).

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

3835878642 is a wasteful number, since it uses less digits than its factorization.

3835878642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213104377 (or 213104374 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 54.

The square root of 3835878642 is about 61934.4705475069. The cubic root of 3835878642 is about 1565.3866277603.

The spelling of 3835878642 in words is "three billion, eight hundred thirty-five million, eight hundred seventy-eight thousand, six hundred forty-two".