1909140777426 has 16 divisors (see below), whose sum is σ = 3824720485344. Its totient is φ = 635307104064.

The previous prime is 1909140777421. The next prime is 1909140777437. The reversal of 1909140777426 is 6247770419091.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1909140777421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268284916 + ... + 268292031.

It is an arithmetic number, because the mean of its divisors is an integer number (239045030334).

Almost surely, 2^{1909140777426} is an apocalyptic number.

1909140777426 is an abundant number, since it is smaller than the sum of its proper divisors (1915579707918).

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

1909140777426 is a wasteful number, since it uses less digits than its factorization.

1909140777426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536577545.

The product of its (nonzero) digits is 5334336, while the sum is 57.

The spelling of 1909140777426 in words is "one trillion, nine hundred nine billion, one hundred forty million, seven hundred seventy-seven thousand, four hundred twenty-six".