1909403339536 has 160 divisors (see below), whose sum is σ = 4646944862208. Its totient is φ = 738357534720.

The previous prime is 1909403339513. The next prime is 1909403339539. The reversal of 1909403339536 is 6359333049091.

It is a super-2 number, since 2×1909403339536² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1909403339539) 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 31 ways as a sum of consecutive naturals, for example, 105325705 + ... + 105343831.

Almost surely, 2^{1909403339536} is an apocalyptic number.

1909403339536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1909403339536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2323472431104).

1909403339536 is an abundant number, since it is smaller than the sum of its proper divisors (2737541522672).

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

1909403339536 is a wasteful number, since it uses less digits than its factorization.

1909403339536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18789 (or 18783 counting only the distinct ones).

The product of its (nonzero) digits is 7085880, while the sum is 55.

The spelling of 1909403339536 in words is "one trillion, nine hundred nine billion, four hundred three million, three hundred thirty-nine thousand, five hundred thirty-six".