199210980149 has 4 divisors (see below), whose sum is σ = 207872327136. Its totient is φ = 190549633164.

The previous prime is 199210980109. The next prime is 199210980161. The reversal of 199210980149 is 941089012991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 941089012991 = 10477 ⋅89824283.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199210980149 is a prime.

It is a super-2 number, since 2×199210980149² (a number of 23 digits) contains 22 as substring.

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 199210980149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199210980109) 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, 4330673459 + ... + 4330673504.

It is an arithmetic number, because the mean of its divisors is an integer number (51968081784).

Almost surely, 2^199210980149 is an apocalyptic number.

It is an amenable number.

199210980149 is a deficient number, since it is larger than the sum of its proper divisors (8661346987).

199210980149 is an equidigital number, since it uses as much as digits as its factorization.

199210980149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8661346986.

The product of its (nonzero) digits is 419904, while the sum is 53.

The spelling of 199210980149 in words is "one hundred ninety-nine billion, two hundred ten million, nine hundred eighty thousand, one hundred forty-nine".