3778806784 has 99 divisors (see below), whose sum is σ = 8096050807. Its totient is φ = 1762525184.

The previous prime is 3778806769. The next prime is 3778806799. The reversal of 3778806784 is 4876088773.

The square root of 3778806784 is 61472.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (3778806769) and next prime (3778806799).

It can be written as a sum of positive squares in 4 ways, for example, as 461046784 + 3317760000 = 21472^2 + 57600^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 33440712 + ... + 33440824.

Almost surely, 2^3778806784 is an apocalyptic number.

3778806784 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

3778806784 is the 61472-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3778806784

3778806784 is an abundant number, since it is smaller than the sum of its proper divisors (4317244023).

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

3778806784 is an equidigital number, since it uses as much as digits as its factorization.

3778806784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 12644352, while the sum is 58.

The cubic root of 3778806784 is about 1557.5843041245.

The spelling of 3778806784 in words is "three billion, seven hundred seventy-eight million, eight hundred six thousand, seven hundred eighty-four".