3826778949 has 12 divisors (see below), whose sum is σ = 6317222496. Its totient is φ = 2186730792.

The previous prime is 3826778933. The next prime is 3826778959. The reversal of 3826778949 is 9498776283.

3826778949 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3826778949 - 2⁴ = 3826778933 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 60742523 = 3826778949 / (3 + 8 + 2 + 6 + 7 + 7 + 8 + 9 + 4 + 9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3826778929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30371199 + ... + 30371324.

It is an arithmetic number, because the mean of its divisors is an integer number (526435208).

Almost surely, 2^3826778949 is an apocalyptic number.

It is an amenable number.

3826778949 is a deficient number, since it is larger than the sum of its proper divisors (2490443547).

3826778949 is a wasteful number, since it uses less digits than its factorization.

3826778949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60742536 (or 60742533 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 63.

The square root of 3826778949 is about 61860.9646627015. The cubic root of 3826778949 is about 1564.1478141061.

The spelling of 3826778949 in words is "three billion, eight hundred twenty-six million, seven hundred seventy-eight thousand, nine hundred forty-nine".