199920610 has 16 divisors (see below), whose sum is σ = 367514496. Its totient is φ = 78266608.

The previous prime is 199920547. The next prime is 199920649. The reversal of 199920610 is 16029991.

It is a self number, because there is not a number n which added to its sum of digits gives 199920610.

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, 212212 + ... + 213151.

It is an arithmetic number, because the mean of its divisors is an integer number (22969656).

Almost surely, 2^199920610 is an apocalyptic number.

199920610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199920610 is a deficient number, since it is larger than the sum of its proper divisors (167593886).

199920610 is a wasteful number, since it uses less digits than its factorization.

199920610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425417.

The product of its (nonzero) digits is 8748, while the sum is 37.

The square root of 199920610 is about 14139.3284847619. The cubic root of 199920610 is about 584.7261581457.

The spelling of 199920610 in words is "one hundred ninety-nine million, nine hundred twenty thousand, six hundred ten".