1826820290 has 16 divisors (see below), whose sum is σ = 3288764160. Its totient is φ = 730619760.

The previous prime is 1826820269. The next prime is 1826820329. The reversal of 1826820290 is 920286281.

It is a Curzon number.

It is an unprimeable number.

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, 119375 + ... + 133805.

It is an arithmetic number, because the mean of its divisors is an integer number (205547760).

Almost surely, 2^1826820290 is an apocalyptic number.

1826820290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1826820290 is a deficient number, since it is larger than the sum of its proper divisors (1461943870).

1826820290 is a wasteful number, since it uses less digits than its factorization.

1826820290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27097.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 1826820290 is about 42741.3182997436. The cubic root of 1826820290 is about 1222.4523568515.

The spelling of 1826820290 in words is "one billion, eight hundred twenty-six million, eight hundred twenty thousand, two hundred ninety".