1009285400609 has 2 divisors, whose sum is σ = 1009285400610. Its totient is φ = 1009285400608.

The previous prime is 1009285400603. The next prime is 1009285400647. The reversal of 1009285400609 is 9060045829001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 725047141009 + 284238259600 = 851497^2 + 533140^2 .

It is a cyclic number.

It is not a de Polignac number, because 1009285400609 - 2²⁸ = 1009016965153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1009285400609.

It is not a weakly prime, because it can be changed into another prime (1009285400603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504642700304 + 504642700305.

It is an arithmetic number, because the mean of its divisors is an integer number (504642700305).

Almost surely, 2^{1009285400609} is an apocalyptic number.

It is an amenable number.

1009285400609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1009285400609 is an equidigital number, since it uses as much as digits as its factorization.

1009285400609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 44.

The spelling of 1009285400609 in words is "one trillion, nine billion, two hundred eighty-five million, four hundred thousand, six hundred nine".