1906791 has 8 divisors (see below), whose sum is σ = 2550384. Its totient is φ = 1267200.

The previous prime is 1906757. The next prime is 1906811. The reversal of 1906791 is 1976091.

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

It is not a de Polignac number, because 1906791 - 2⁶ = 1906727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1906711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391 + ... + 1991.

It is an arithmetic number, because the mean of its divisors is an integer number (318798).

2^1906791 is an apocalyptic number.

1906791 is a deficient number, since it is larger than the sum of its proper divisors (643593).

1906791 is a wasteful number, since it uses less digits than its factorization.

1906791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001.

The product of its (nonzero) digits is 3402, while the sum is 33.

The square root of 1906791 is about 1380.8660326042. The cubic root of 1906791 is about 124.0036202550.

The spelling of 1906791 in words is "one million, nine hundred six thousand, seven hundred ninety-one".