1992107685 has 32 divisors (see below), whose sum is σ = 3378049920. Its totient is φ = 999016448.

The previous prime is 1992107681. The next prime is 1992107693. The reversal of 1992107685 is 5867012991.

It is a cyclic number.

It is not a de Polignac number, because 1992107685 - 2² = 1992107681 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1992107681) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 324121 + ... + 330209.

It is an arithmetic number, because the mean of its divisors is an integer number (105564060).

Almost surely, 2^1992107685 is an apocalyptic number.

1992107685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1992107685 is a deficient number, since it is larger than the sum of its proper divisors (1385942235).

1992107685 is a wasteful number, since it uses less digits than its factorization.

1992107685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7397.

The product of its (nonzero) digits is 272160, while the sum is 48.

The square root of 1992107685 is about 44633.0335625980. The cubic root of 1992107685 is about 1258.2615828373.

The spelling of 1992107685 in words is "one billion, nine hundred ninety-two million, one hundred seven thousand, six hundred eighty-five".