1920150909 has 24 divisors (see below), whose sum is σ = 2881255104. Its totient is φ = 1231272000.

The previous prime is 1920150907. The next prime is 1920150937. The reversal of 1920150909 is 9090510291.

It is not a de Polignac number, because 1920150909 - 2¹ = 1920150907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920150907) 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 23 ways as a sum of consecutive naturals, for example, 10447 + ... + 62844.

It is an arithmetic number, because the mean of its divisors is an integer number (120052296).

Almost surely, 2^1920150909 is an apocalyptic number.

It is an amenable number.

1920150909 is a deficient number, since it is larger than the sum of its proper divisors (961104195).

1920150909 is a wasteful number, since it uses less digits than its factorization.

1920150909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73409 (or 73406 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 36.

The square root of 1920150909 is about 43819.5265720660. The cubic root of 1920150909 is about 1242.9255646778.

The spelling of 1920150909 in words is "one billion, nine hundred twenty million, one hundred fifty thousand, nine hundred nine".