1922520509 has 12 divisors (see below), whose sum is σ = 2379181536. Its totient is φ = 1521114192.

The previous prime is 1922520473. The next prime is 1922520511. The reversal of 1922520509 is 9050252291.

It is not a de Polignac number, because 1922520509 - 2¹² = 1922516413 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1922520559) 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 11 ways as a sum of consecutive naturals, for example, 811379 + ... + 813744.

It is an arithmetic number, because the mean of its divisors is an integer number (198265128).

Almost surely, 2^1922520509 is an apocalyptic number.

It is an amenable number.

1922520509 is a deficient number, since it is larger than the sum of its proper divisors (456661027).

1922520509 is a wasteful number, since it uses less digits than its factorization.

1922520509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1625156 (or 1625143 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 1922520509 is about 43846.5564098254. The cubic root of 1922520509 is about 1243.4366400819.

The spelling of 1922520509 in words is "one billion, nine hundred twenty-two million, five hundred twenty thousand, five hundred nine".