1923681011 has 16 divisors (see below), whose sum is σ = 2338076160. Its totient is φ = 1545972480.

The previous prime is 1923680963. The next prime is 1923681043. The reversal of 1923681011 is 1101863291.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1923681011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1923681211) 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, 61655 + ... + 87456.

It is an arithmetic number, because the mean of its divisors is an integer number (146129760).

Almost surely, 2^1923681011 is an apocalyptic number.

1923681011 is a deficient number, since it is larger than the sum of its proper divisors (414395149).

1923681011 is a wasteful number, since it uses less digits than its factorization.

1923681011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149234.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 1923681011 is about 43859.7880865834. The cubic root of 1923681011 is about 1243.6867840028.

The spelling of 1923681011 in words is "one billion, nine hundred twenty-three million, six hundred eighty-one thousand, eleven".