1006395894 has 64 divisors (see below), whose sum is σ = 2560289280. Its totient is φ = 287051040.

The previous prime is 1006395851. The next prime is 1006395911. The reversal of 1006395894 is 4985936001.

It is a happy number.

1006395894 is a `hidden beast` number, since 1 + 0 + 0 + 63 + 9 + 589 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 259272 + ... + 263124.

It is an arithmetic number, because the mean of its divisors is an integer number (40004520).

Almost surely, 2^1006395894 is an apocalyptic number.

1006395894 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1006395894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1280144640).

1006395894 is an abundant number, since it is smaller than the sum of its proper divisors (1553893386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1006395894 is a wasteful number, since it uses less digits than its factorization.

1006395894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4562 (or 4556 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 1006395894 is about 31723.7433793681. The cubic root of 1006395894 is about 1002.1274354754.

It can be divided in two parts, 1006 and 395894, that added together give a square (396900 = 630²).

The spelling of 1006395894 in words is "one billion, six million, three hundred ninety-five thousand, eight hundred ninety-four".