199019907 has 24 divisors (see below), whose sum is σ = 297722880. Its totient is φ = 127977840.

The previous prime is 199019879. The next prime is 199019923. The reversal of 199019907 is 709910991.

It is not a de Polignac number, because 199019907 - 2⁸ = 199019651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (199012907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99168 + ... + 101154.

It is an arithmetic number, because the mean of its divisors is an integer number (12405120).

Almost surely, 2^199019907 is an apocalyptic number.

199019907 is a deficient number, since it is larger than the sum of its proper divisors (98702973).

199019907 is a wasteful number, since it uses less digits than its factorization.

199019907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383 (or 2380 counting only the distinct ones).

The product of its (nonzero) digits is 45927, while the sum is 45.

The square root of 199019907 is about 14107.4415469283. The cubic root of 199019907 is about 583.8467131860.

The spelling of 199019907 in words is "one hundred ninety-nine million, nineteen thousand, nine hundred seven".