1609899458980 has 12 divisors (see below), whose sum is σ = 3380788863900. Its totient is φ = 643959783584.

The previous prime is 1609899458977. The next prime is 1609899459061. The reversal of 1609899458980 is 898549989061.

It can be written as a sum of positive squares in 2 ways, for example, as 195802710016 + 1414096748964 = 442496^2 + 1189158^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1609899458897 and 1609899458906.

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, 40247486455 + ... + 40247486494.

It is an arithmetic number, because the mean of its divisors is an integer number (281732405325).

Almost surely, 2^{1609899458980} is an apocalyptic number.

1609899458980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1609899458980 is an abundant number, since it is smaller than the sum of its proper divisors (1770889404920).

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

1609899458980 is a wasteful number, since it uses less digits than its factorization.

1609899458980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80494972958 (or 80494972956 counting only the distinct ones).

The product of its (nonzero) digits is 403107840, while the sum is 76.

The spelling of 1609899458980 in words is "one trillion, six hundred nine billion, eight hundred ninety-nine million, four hundred fifty-eight thousand, nine hundred eighty".