3563949394 has 16 divisors (see below), whose sum is σ = 5668989336. Its totient is φ = 1674604800.

The previous prime is 3563949359. The next prime is 3563949397. The reversal of 3563949394 is 4939493653.

3563949394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3558719025 + 5230369 = 59655^2 + 2287^2 .

It is not an unprimeable number, because it can be changed into a prime (3563949397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56817 + ... + 101764.

Almost surely, 2^3563949394 is an apocalyptic number.

3563949394 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

3563949394 is a deficient number, since it is larger than the sum of its proper divisors (2105039942).

3563949394 is a wasteful number, since it uses less digits than its factorization.

3563949394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159261.

The product of its digits is 9447840, while the sum is 55.

The square root of 3563949394 is about 59698.8223836953. The cubic root of 3563949394 is about 1527.4857811301.

The spelling of 3563949394 in words is "three billion, five hundred sixty-three million, nine hundred forty-nine thousand, three hundred ninety-four".