1906798 has 4 divisors (see below), whose sum is σ = 2860200. Its totient is φ = 953398.

The previous prime is 1906757. The next prime is 1906811. The reversal of 1906798 is 8976091.

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

It is a super-2 number, since 2×1906798² = 7271757225608, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1906798.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 476698 + ... + 476701.

It is an arithmetic number, because the mean of its divisors is an integer number (715050).

2^1906798 is an apocalyptic number.

1906798 is a deficient number, since it is larger than the sum of its proper divisors (953402).

1906798 is an equidigital number, since it uses as much as digits as its factorization.

1906798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953401.

The product of its (nonzero) digits is 27216, while the sum is 40.

The square root of 1906798 is about 1380.8685672431. The cubic root of 1906798 is about 124.0037719976.

It can be divided in two parts, 1906 and 798, that added together give a square (2704 = 52²).

The spelling of 1906798 in words is "one million, nine hundred six thousand, seven hundred ninety-eight".