1056841509 has 8 divisors (see below), whose sum is σ = 1415018880. Its totient is φ = 701612576.

The previous prime is 1056841493. The next prime is 1056841523. The reversal of 1056841509 is 9051486501.

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

It is a cyclic number.

It is not a de Polignac number, because 1056841509 - 2⁴ = 1056841493 is a prime.

It is a super-2 number, since 2×1056841509² = 2233827950290794162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056841529) 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, 736272 + ... + 737705.

It is an arithmetic number, because the mean of its divisors is an integer number (176877360).

Almost surely, 2^1056841509 is an apocalyptic number.

It is an amenable number.

1056841509 is a deficient number, since it is larger than the sum of its proper divisors (358177371).

1056841509 is a wasteful number, since it uses less digits than its factorization.

1056841509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474219.

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 1056841509 is about 32509.0988647794. The cubic root of 1056841509 is about 1018.5990985593.

The spelling of 1056841509 in words is "one billion, fifty-six million, eight hundred forty-one thousand, five hundred nine".