3778689999 has 64 divisors (see below), whose sum is σ = 6197990400. Its totient is φ = 1999945728.

The previous prime is 3778689997. The next prime is 3778690007. The reversal of 3778689999 is 9999868773.

It is not a de Polignac number, because 3778689999 - 2¹ = 3778689997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3778689999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3778689991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3444019 + ... + 3445115.

It is an arithmetic number, because the mean of its divisors is an integer number (96843600).

Almost surely, 2^3778689999 is an apocalyptic number.

3778689999 is a deficient number, since it is larger than the sum of its proper divisors (2419300401).

3778689999 is a wasteful number, since it uses less digits than its factorization.

3778689999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312.

The product of its digits is 370355328, while the sum is 75.

The square root of 3778689999 is about 61471.0500886393. The cubic root of 3778689999 is about 1557.5682581107.

The spelling of 3778689999 in words is "three billion, seven hundred seventy-eight million, six hundred eighty-nine thousand, nine hundred ninety-nine".