199149564 has 24 divisors (see below), whose sum is σ = 489139840. Its totient is φ = 62889264.

The previous prime is 199149553. The next prime is 199149569. The reversal of 199149564 is 465941991.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199149569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436504 + ... + 436959.

Almost surely, 2^199149564 is an apocalyptic number.

It is an amenable number.

199149564 is an abundant number, since it is smaller than the sum of its proper divisors (289990276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199149564 is a wasteful number, since it uses less digits than its factorization.

199149564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873489 (or 873487 counting only the distinct ones).

The product of its digits is 349920, while the sum is 48.

The square root of 199149564 is about 14112.0361394095. The cubic root of 199149564 is about 583.9734733369.

The spelling of 199149564 in words is "one hundred ninety-nine million, one hundred forty-nine thousand, five hundred sixty-four".