199149290 has 8 divisors (see below), whose sum is σ = 358468740. Its totient is φ = 79659712.

The previous prime is 199149263. The next prime is 199149299. The reversal of 199149290 is 92941991.

It can be written as a sum of positive squares in 2 ways, for example, as 195804049 + 3345241 = 13993^2 + 1829^2 .

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 (199149299) 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, 9957455 + ... + 9957474.

Almost surely, 2^199149290 is an apocalyptic number.

199149290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199149290 is a deficient number, since it is larger than the sum of its proper divisors (159319450).

199149290 is a wasteful number, since it uses less digits than its factorization.

199149290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19914936.

The product of its (nonzero) digits is 52488, while the sum is 44.

The square root of 199149290 is about 14112.0264313811. The cubic root of 199149290 is about 583.9732055168.

The spelling of 199149290 in words is "one hundred ninety-nine million, one hundred forty-nine thousand, two hundred ninety".