199118015 has 16 divisors (see below), whose sum is σ = 250131456. Its totient is φ = 151879200.

The previous prime is 199117987. The next prime is 199118021. The reversal of 199118015 is 510811991.

It is not a de Polignac number, because 199118015 - 2⁸ = 199117759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35450 + ... + 40680.

It is an arithmetic number, because the mean of its divisors is an integer number (15633216).

Almost surely, 2^199118015 is an apocalyptic number.

199118015 is a deficient number, since it is larger than the sum of its proper divisors (51013441).

199118015 is a wasteful number, since it uses less digits than its factorization.

199118015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5590.

The product of its (nonzero) digits is 3240, while the sum is 35.

The square root of 199118015 is about 14110.9182904586. The cubic root of 199118015 is about 583.9426342836.

The spelling of 199118015 in words is "one hundred ninety-nine million, one hundred eighteen thousand, fifteen".