3893378669 has 2 divisors, whose sum is σ = 3893378670. Its totient is φ = 3893378668.

The previous prime is 3893378653. The next prime is 3893378729. The reversal of 3893378669 is 9668733983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3425175625 + 468203044 = 58525^2 + 21638^2 .

It is a cyclic number.

It is not a de Polignac number, because 3893378669 - 2⁴ = 3893378653 is a prime.

It is a super-2 number, since 2×3893378669² = 30316794920448423122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3893378609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1946689334 + 1946689335.

It is an arithmetic number, because the mean of its divisors is an integer number (1946689335).

Almost surely, 2^3893378669 is an apocalyptic number.

It is an amenable number.

3893378669 is a deficient number, since it is larger than the sum of its proper divisors (1).

3893378669 is an equidigital number, since it uses as much as digits as its factorization.

3893378669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 35271936, while the sum is 62.

The square root of 3893378669 is about 62396.9443883272. The cubic root of 3893378669 is about 1573.1696104601.

The spelling of 3893378669 in words is "three billion, eight hundred ninety-three million, three hundred seventy-eight thousand, six hundred sixty-nine".