1909448825652 has 60 divisors (see below), whose sum is σ = 5285304444420. Its totient is φ = 599042767104.

The previous prime is 1909448825633. The next prime is 1909448825659. The reversal of 1909448825652 is 2565288449091.

1909448825652 is a `hidden beast` number, since 1 + 9 + 0 + 94 + 488 + 2 + 5 + 65 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1460433578256 + 449015247396 = 1208484^2 + 670086^2 .

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1909448825652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1909448825659) 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 19 ways as a sum of consecutive naturals, for example, 173328627 + ... + 173339642.

It is an arithmetic number, because the mean of its divisors is an integer number (88088407407).

Almost surely, 2^{1909448825652} is an apocalyptic number.

1909448825652 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1909448825652 is an abundant number, since it is smaller than the sum of its proper divisors (3375855618768).

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

1909448825652 is a wasteful number, since it uses less digits than its factorization.

1909448825652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346668302 (or 346668291 counting only the distinct ones).

The product of its (nonzero) digits is 49766400, while the sum is 63.

The spelling of 1909448825652 in words is "one trillion, nine hundred nine billion, four hundred forty-eight million, eight hundred twenty-five thousand, six hundred fifty-two".