3878761394 has 8 divisors (see below), whose sum is σ = 5818408428. Its totient is φ = 1939291920.

The previous prime is 3878761373. The next prime is 3878761457. The reversal of 3878761394 is 4931678783.

It can be written as a sum of positive squares in 2 ways, for example, as 3859515625 + 19245769 = 62125^2 + 4387^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 52664 + ... + 102620.

Almost surely, 2^3878761394 is an apocalyptic number.

3878761394 is a deficient number, since it is larger than the sum of its proper divisors (1939647034).

3878761394 is a wasteful number, since it uses less digits than its factorization.

3878761394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88780.

The product of its digits is 6096384, while the sum is 56.

The square root of 3878761394 is about 62279.7029055213. The cubic root of 3878761394 is about 1571.1983756242.

The spelling of 3878761394 in words is "three billion, eight hundred seventy-eight million, seven hundred sixty-one thousand, three hundred ninety-four".