3778912890 has 48 divisors (see below), whose sum is σ = 9959782248. Its totient is φ = 993904128.

The previous prime is 3778912859. The next prime is 3778912919. The reversal of 3778912890 is 982198773.

It can be written as a sum of positive squares in 4 ways, for example, as 2196703161 + 1582209729 = 46869^2 + 39777^2 .

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 23 ways as a sum of consecutive naturals, for example, 281019 + ... + 294158.

Almost surely, 2^3778912890 is an apocalyptic number.

3778912890 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3778912890 is an abundant number, since it is smaller than the sum of its proper divisors (6180869358).

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

3778912890 is a wasteful number, since it uses less digits than its factorization.

3778912890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575263 (or 575260 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The square root of 3778912890 is about 61472.8630372785. The cubic root of 3778912890 is about 1557.5988825794.

The spelling of 3778912890 in words is "three billion, seven hundred seventy-eight million, nine hundred twelve thousand, eight hundred ninety".