1820076774 has 16 divisors (see below), whose sum is σ = 3757578240. Its totient is φ = 587121480.

The previous prime is 1820076773. The next prime is 1820076787. The reversal of 1820076774 is 4776700281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1820076773) by changing a digit.

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, 4892494 + ... + 4892865.

It is an arithmetic number, because the mean of its divisors is an integer number (234848640).

Almost surely, 2^1820076774 is an apocalyptic number.

1820076774 is an abundant number, since it is smaller than the sum of its proper divisors (1937501466).

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

1820076774 is a wasteful number, since it uses less digits than its factorization.

1820076774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9785395.

The product of its (nonzero) digits is 131712, while the sum is 42.

The square root of 1820076774 is about 42662.3578110727. The cubic root of 1820076774 is about 1220.9463172004.

The spelling of 1820076774 in words is "one billion, eight hundred twenty million, seventy-six thousand, seven hundred seventy-four".