199140948 has 18 divisors (see below), whose sum is σ = 503384154. Its totient is φ = 66380304.

The previous prime is 199140947. The next prime is 199140961. The reversal of 199140948 is 849041991.

It can be written as a sum of positive squares in only one way, i.e., 195944004 + 3196944 = 13998^2 + 1788^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199140943) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2765811 + ... + 2765882.

Almost surely, 2^199140948 is an apocalyptic number.

199140948 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

199140948 is an abundant number, since it is smaller than the sum of its proper divisors (304243206).

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

199140948 is a wasteful number, since it uses less digits than its factorization.

199140948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5531703 (or 5531698 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 199140948 is about 14111.7308647805. The cubic root of 199140948 is about 583.9650515459.

The spelling of 199140948 in words is "one hundred ninety-nine million, one hundred forty thousand, nine hundred forty-eight".