1980227890 has 16 divisors (see below), whose sum is σ = 3567136320. Its totient is φ = 791485360.

The previous prime is 1980227867. The next prime is 1980227891. The reversal of 1980227890 is 987220891.

It is a self number, because there is not a number n which added to its sum of digits gives 1980227890.

It is not an unprimeable number, because it can be changed into a prime (1980227891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61876 + ... + 88255.

It is an arithmetic number, because the mean of its divisors is an integer number (222946020).

Almost surely, 2^1980227890 is an apocalyptic number.

1980227890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1980227890 is a deficient number, since it is larger than the sum of its proper divisors (1586908430).

1980227890 is a wasteful number, since it uses less digits than its factorization.

1980227890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151457.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 1980227890 is about 44499.7515723403. The cubic root of 1980227890 is about 1255.7554094055.

The spelling of 1980227890 in words is "one billion, nine hundred eighty million, two hundred twenty-seven thousand, eight hundred ninety".