1920009100911 has 16 divisors (see below), whose sum is σ = 2792968134528. Its totient is φ = 1163547036000.

The previous prime is 1920009100901. The next prime is 1920009100939. The reversal of 1920009100911 is 1190019000291.

It is not a de Polignac number, because 1920009100911 - 2¹³ = 1920009092719 is a prime.

It is a super-4 number, since 4×1920009100911⁴ (a number of 50 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920009100901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1959001 + ... + 2770866.

It is an arithmetic number, because the mean of its divisors is an integer number (174560508408).

Almost surely, 2^{1920009100911} is an apocalyptic number.

1920009100911 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1920009100911 is a deficient number, since it is larger than the sum of its proper divisors (872959033617).

1920009100911 is a wasteful number, since it uses less digits than its factorization.

1920009100911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4742182.

The product of its (nonzero) digits is 1458, while the sum is 33.

The spelling of 1920009100911 in words is "one trillion, nine hundred twenty billion, nine million, one hundred thousand, nine hundred eleven".