199267649 has 16 divisors (see below), whose sum is σ = 240122880. Its totient is φ = 161539920.

The previous prime is 199267619. The next prime is 199267723. The reversal of 199267649 is 946762991.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199267649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 199267649.

It is not an unprimeable number, because it can be changed into a prime (199267619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128372 + ... + 129914.

It is an arithmetic number, because the mean of its divisors is an integer number (15007680).

Almost surely, 2^199267649 is an apocalyptic number.

199267649 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

199267649 is a deficient number, since it is larger than the sum of its proper divisors (40855231).

199267649 is a wasteful number, since it uses less digits than its factorization.

199267649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2540.

The product of its digits is 1469664, while the sum is 53.

The square root of 199267649 is about 14116.2193593044. The cubic root of 199267649 is about 584.0888721711.

The spelling of 199267649 in words is "one hundred ninety-nine million, two hundred sixty-seven thousand, six hundred forty-nine".