199132815 has 48 divisors (see below), whose sum is σ = 392457312. Its totient is φ = 85671936.

The previous prime is 199132811. The next prime is 199132823. The reversal of 199132815 is 518231991.

It is not a de Polignac number, because 199132815 - 2² = 199132811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199132811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4527 + ... + 20463.

It is an arithmetic number, because the mean of its divisors is an integer number (8176194).

Almost surely, 2^199132815 is an apocalyptic number.

199132815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

199132815 is a deficient number, since it is larger than the sum of its proper divisors (193324497).

199132815 is a wasteful number, since it uses less digits than its factorization.

199132815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15976 (or 15969 counting only the distinct ones).

The product of its digits is 19440, while the sum is 39.

The square root of 199132815 is about 14111.4426973290. The cubic root of 199132815 is about 583.9571016450.

The spelling of 199132815 in words is "one hundred ninety-nine million, one hundred thirty-two thousand, eight hundred fifteen".