1992505 has 8 divisors (see below), whose sum is σ = 2403072. Its totient is φ = 1585968.

The previous prime is 1992493. The next prime is 1992509. The reversal of 1992505 is 5052991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1992505 - 2⁹ = 1991993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1992509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222 + ... + 2008.

It is an arithmetic number, because the mean of its divisors is an integer number (300384).

2^1992505 is an apocalyptic number.

It is an amenable number.

1992505 is a deficient number, since it is larger than the sum of its proper divisors (410567).

1992505 is a wasteful number, since it uses less digits than its factorization.

1992505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015.

The product of its (nonzero) digits is 4050, while the sum is 31.

The square root of 1992505 is about 1411.5611924391. The cubic root of 1992505 is about 125.8345228411.

It can be divided in two parts, 199 and 2505, that added together give a square (2704 = 52²).

The spelling of 1992505 in words is "one million, nine hundred ninety-two thousand, five hundred five".