199361418 has 16 divisors (see below), whose sum is σ = 399171456. Its totient is φ = 66379040.

The previous prime is 199361387. The next prime is 199361419. The reversal of 199361418 is 814163991.

It is a self number, because there is not a number n which added to its sum of digits gives 199361418.

It is not an unprimeable number, because it can be changed into a prime (199361419) 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, 12771 + ... + 23702.

It is an arithmetic number, because the mean of its divisors is an integer number (24948216).

Almost surely, 2^199361418 is an apocalyptic number.

199361418 is an abundant number, since it is smaller than the sum of its proper divisors (199810038).

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

199361418 is a wasteful number, since it uses less digits than its factorization.

199361418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37389.

The product of its digits is 46656, while the sum is 42.

The square root of 199361418 is about 14119.5402899670. The cubic root of 199361418 is about 584.1804756686.

The spelling of 199361418 in words is "one hundred ninety-nine million, three hundred sixty-one thousand, four hundred eighteen".