3788227681 has 6 divisors (see below), whose sum is σ = 4406713890. Its totient is φ = 3247052256.

The previous prime is 3788227661. The next prime is 3788227687. The reversal of 3788227681 is 1867228873.

It can be written as a sum of positive squares in only one way, i.e., 2324782656 + 1463445025 = 48216^2 + 38255^2 .

It is not a de Polignac number, because 3788227681 - 2⁹ = 3788227169 is a prime.

It is a super-2 number, since 2×3788227681² = 28701337926189275522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3788227687) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38655336 + ... + 38655433.

It is an arithmetic number, because the mean of its divisors is an integer number (734452315).

Almost surely, 2^3788227681 is an apocalyptic number.

It is an amenable number.

3788227681 is a deficient number, since it is larger than the sum of its proper divisors (618486209).

3788227681 is an equidigital number, since it uses as much as digits as its factorization.

3788227681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77310783 (or 77310776 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 52.

The square root of 3788227681 is about 61548.5798455172. The cubic root of 3788227681 is about 1558.8776280586.

The spelling of 3788227681 in words is "three billion, seven hundred eighty-eight million, two hundred twenty-seven thousand, six hundred eighty-one".