16489939250 has 16 divisors (see below), whose sum is σ = 30869166744. Its totient is φ = 6595975600.

The previous prime is 16489939231. The next prime is 16489939273. The reversal of 16489939250 is 5293998461.

It can be written as a sum of positive squares in 4 ways, for example, as 1556854849 + 14933084401 = 39457^2 + 122201^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32979629 + ... + 32980128.

Almost surely, 2^16489939250 is an apocalyptic number.

16489939250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16489939250 is a deficient number, since it is larger than the sum of its proper divisors (14379227494).

16489939250 is an equidigital number, since it uses as much as digits as its factorization.

16489939250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65959774 (or 65959764 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 56.

The spelling of 16489939250 in words is "sixteen billion, four hundred eighty-nine million, nine hundred thirty-nine thousand, two hundred fifty".