1980551122 has 16 divisors (see below), whose sum is σ = 3241620000. Its totient is φ = 900051040.

The previous prime is 1980551107. The next prime is 1980551129. The reversal of 1980551122 is 2211550891.

It is not an unprimeable number, because it can be changed into a prime (1980551129) 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, 145254 + ... + 158302.

It is an arithmetic number, because the mean of its divisors is an integer number (202601250).

Almost surely, 2^1980551122 is an apocalyptic number.

1980551122 is a deficient number, since it is larger than the sum of its proper divisors (1261068878).

1980551122 is a wasteful number, since it uses less digits than its factorization.

1980551122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19961.

The product of its (nonzero) digits is 7200, while the sum is 34.

The square root of 1980551122 is about 44503.3832646463. The cubic root of 1980551122 is about 1255.8237312136.

The spelling of 1980551122 in words is "one billion, nine hundred eighty million, five hundred fifty-one thousand, one hundred twenty-two".