3778488893 has 4 divisors (see below), whose sum is σ = 3787464348. Its totient is φ = 3769513440.

The previous prime is 3778488869. The next prime is 3778488997. The reversal of 3778488893 is 3988848773.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54804409 + 3723684484 = 7403^2 + 61022^2 .

It is a cyclic number.

It is not a de Polignac number, because 3778488893 - 2¹⁶ = 3778423357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3778488823) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4487096 + ... + 4487937.

It is an arithmetic number, because the mean of its divisors is an integer number (946866087).

Almost surely, 2^3778488893 is an apocalyptic number.

It is an amenable number.

3778488893 is a deficient number, since it is larger than the sum of its proper divisors (8975455).

3778488893 is an equidigital number, since it uses as much as digits as its factorization.

3778488893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8975454.

The product of its digits is 65028096, while the sum is 65.

The square root of 3778488893 is about 61469.4142887339. The cubic root of 3778488893 is about 1557.5406257938.

The spelling of 3778488893 in words is "three billion, seven hundred seventy-eight million, four hundred eighty-eight thousand, eight hundred ninety-three".