1056913909 has 2 divisors, whose sum is σ = 1056913910. Its totient is φ = 1056913908.

The previous prime is 1056913901. The next prime is 1056913927. The reversal of 1056913909 is 9093196501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 984578884 + 72335025 = 31378^2 + 8505^2 .

It is a cyclic number.

It is not a de Polignac number, because 1056913909 - 2³ = 1056913901 is a prime.

It is a super-2 number, since 2×1056913909² = 2234134022075320562, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1056913901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528456954 + 528456955.

It is an arithmetic number, because the mean of its divisors is an integer number (528456955).

Almost surely, 2^1056913909 is an apocalyptic number.

It is an amenable number.

1056913909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1056913909 is an equidigital number, since it uses as much as digits as its factorization.

1056913909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65610, while the sum is 43.

The square root of 1056913909 is about 32510.2123801122. The cubic root of 1056913909 is about 1018.6223580831.

The spelling of 1056913909 in words is "one billion, fifty-six million, nine hundred thirteen thousand, nine hundred nine".