16208987090 has 8 divisors (see below), whose sum is σ = 29176176780. Its totient is φ = 6483594832.

The previous prime is 16208987089. The next prime is 16208987099. The reversal of 16208987090 is 9078980261.

It can be written as a sum of positive squares in 2 ways, for example, as 16085087929 + 123899161 = 126827^2 + 11131^2 .

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

It is not an unprimeable number, because it can be changed into a prime (16208987099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810449345 + ... + 810449364.

Almost surely, 2^16208987090 is an apocalyptic number.

16208987090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16208987090 is a deficient number, since it is larger than the sum of its proper divisors (12967189690).

16208987090 is a wasteful number, since it uses less digits than its factorization.

16208987090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620898716.

The product of its (nonzero) digits is 435456, while the sum is 50.

The spelling of 16208987090 in words is "sixteen billion, two hundred eight million, nine hundred eighty-seven thousand, ninety".