1820836794 has 16 divisors (see below), whose sum is σ = 4161912768. Its totient is φ = 520239072.

The previous prime is 1820836789. The next prime is 1820836841. The reversal of 1820836794 is 4976380281.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21676587 + ... + 21676670.

It is an arithmetic number, because the mean of its divisors is an integer number (260119548).

Almost surely, 2^1820836794 is an apocalyptic number.

1820836794 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1820836794 is an abundant number, since it is smaller than the sum of its proper divisors (2341075974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1820836794 is a wasteful number, since it uses less digits than its factorization.

1820836794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43353269.

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 1820836794 is about 42671.2642653109. The cubic root of 1820836794 is about 1221.1162394258.

The spelling of 1820836794 in words is "one billion, eight hundred twenty million, eight hundred thirty-six thousand, seven hundred ninety-four".