1992115 has 4 divisors (see below), whose sum is σ = 2390544. Its totient is φ = 1593688.

The previous prime is 1992101. The next prime is 1992119. The reversal of 1992115 is 5112991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1992115 - 2⁹ = 1991603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1992119) 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 3 ways as a sum of consecutive naturals, for example, 199207 + ... + 199216.

It is an arithmetic number, because the mean of its divisors is an integer number (597636).

2^1992115 is an apocalyptic number.

1992115 is a deficient number, since it is larger than the sum of its proper divisors (398429).

1992115 is an equidigital number, since it uses as much as digits as its factorization.

1992115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398428.

The product of its digits is 810, while the sum is 28.

The square root of 1992115 is about 1411.4230407642. The cubic root of 1992115 is about 125.8263122943.

The spelling of 1992115 in words is "one million, nine hundred ninety-two thousand, one hundred fifteen".