1980550790 has 8 divisors (see below), whose sum is σ = 3564991440. Its totient is φ = 792220312.

The previous prime is 1980550783. The next prime is 1980550807. The reversal of 1980550790 is 970550891.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99027530 + ... + 99027549.

It is an arithmetic number, because the mean of its divisors is an integer number (445623930).

Almost surely, 2^1980550790 is an apocalyptic number.

1980550790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1980550790 is a deficient number, since it is larger than the sum of its proper divisors (1584440650).

1980550790 is a wasteful number, since it uses less digits than its factorization.

1980550790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198055086.

The product of its (nonzero) digits is 113400, while the sum is 44.

The square root of 1980550790 is about 44503.3795345927. The cubic root of 1980550790 is about 1255.8236610423.

The spelling of 1980550790 in words is "one billion, nine hundred eighty million, five hundred fifty thousand, seven hundred ninety".