1992391011 has 24 divisors (see below), whose sum is σ = 3109426320. Its totient is φ = 1222070976.

The previous prime is 1992390991. The next prime is 1992391021. The reversal of 1992391011 is 1101932991.

It is not a de Polignac number, because 1992391011 - 2¹⁴ = 1992374627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1992391021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8185 + ... + 63653.

It is an arithmetic number, because the mean of its divisors is an integer number (129559430).

Almost surely, 2^1992391011 is an apocalyptic number.

1992391011 is a deficient number, since it is larger than the sum of its proper divisors (1117035309).

1992391011 is a wasteful number, since it uses less digits than its factorization.

1992391011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55795 (or 55792 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 36.

The square root of 1992391011 is about 44636.2073993748. The cubic root of 1992391011 is about 1258.3212317750.

The spelling of 1992391011 in words is "one billion, nine hundred ninety-two million, three hundred ninety-one thousand, eleven".