1056386394 has 48 divisors (see below), whose sum is σ = 2730801600. Its totient is φ = 301823928.

The previous prime is 1056386369. The next prime is 1056386399. The reversal of 1056386394 is 4936836501.

1056386394 is a `hidden beast` number, since 1 + 0 + 5 + 6 + 3 + 8 + 639 + 4 = 666.

It is a super-3 number, since 3×1056386394³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1056386399) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 196974 + ... + 202265.

It is an arithmetic number, because the mean of its divisors is an integer number (56891700).

Almost surely, 2^1056386394 is an apocalyptic number.

1056386394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1056386394 is an abundant number, since it is smaller than the sum of its proper divisors (1674415206).

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

1056386394 is a wasteful number, since it uses less digits than its factorization.

1056386394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399264 (or 399251 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 1056386394 is about 32502.0983014943. The cubic root of 1056386394 is about 1018.4528620973.

The spelling of 1056386394 in words is "one billion, fifty-six million, three hundred eighty-six thousand, three hundred ninety-four".