1920001011 has 16 divisors (see below), whose sum is σ = 2591836320. Its totient is φ = 1264147200.

The previous prime is 1920001009. The next prime is 1920001033. The reversal of 1920001011 is 1101000291.

It is not a de Polignac number, because 1920001011 - 2¹ = 1920001009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1920001001) 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, 116181 + ... + 131673.

It is an arithmetic number, because the mean of its divisors is an integer number (161989770).

Almost surely, 2^1920001011 is an apocalyptic number.

1920001011 is a deficient number, since it is larger than the sum of its proper divisors (671835309).

1920001011 is a wasteful number, since it uses less digits than its factorization.

1920001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16006.

The product of its (nonzero) digits is 18, while the sum is 15.

The square root of 1920001011 is about 43817.8161368181. The cubic root of 1920001011 is about 1242.8932205351.

The spelling of 1920001011 in words is "one billion, nine hundred twenty million, one thousand, eleven".