199019814 has 32 divisors (see below), whose sum is σ = 469579776. Its totient is φ = 55028160.

The previous prime is 199019797. The next prime is 199019819. The reversal of 199019814 is 418910991.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199019819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75127 + ... + 77730.

It is an arithmetic number, because the mean of its divisors is an integer number (14674368).

Almost surely, 2^199019814 is an apocalyptic number.

199019814 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

199019814 is an abundant number, since it is smaller than the sum of its proper divisors (270559962).

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

199019814 is a wasteful number, since it uses less digits than its factorization.

199019814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152900.

The product of its (nonzero) digits is 23328, while the sum is 42.

The square root of 199019814 is about 14107.4382507952. The cubic root of 199019814 is about 583.8466222441.

The spelling of 199019814 in words is "one hundred ninety-nine million, nineteen thousand, eight hundred fourteen".