1980090099 has 12 divisors (see below), whose sum is σ = 3080140336. Its totient is φ = 1218516912.

The previous prime is 1980090041. The next prime is 1980090107. The reversal of 1980090099 is 9900900891.

It is not a de Polignac number, because 1980090099 - 2¹⁷ = 1979959027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1980090599) 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 11 ways as a sum of consecutive naturals, for example, 8461807 + ... + 8462040.

Almost surely, 2^1980090099 is an apocalyptic number.

1980090099 is a deficient number, since it is larger than the sum of its proper divisors (1100050237).

1980090099 is a wasteful number, since it uses less digits than its factorization.

1980090099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16923866 (or 16923863 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 45.

The square root of 1980090099 is about 44498.2033232804. The cubic root of 1980090099 is about 1255.7262821507.

The spelling of 1980090099 in words is "one billion, nine hundred eighty million, ninety thousand, ninety-nine".