199803151 has 4 divisors (see below), whose sum is σ = 200540704. Its totient is φ = 199065600.

The previous prime is 199803103. The next prime is 199803181. The reversal of 199803151 is 151308991.

It is a happy number.

199803151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a 15-Lehmer number, since φ(199803151) divides (199803151-1)¹⁵.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199803151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 199803151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199803101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368370 + ... + 368911.

It is an arithmetic number, because the mean of its divisors is an integer number (50135176).

Almost surely, 2^199803151 is an apocalyptic number.

199803151 is a deficient number, since it is larger than the sum of its proper divisors (737553).

199803151 is an equidigital number, since it uses as much as digits as its factorization.

199803151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737552.

The product of its (nonzero) digits is 9720, while the sum is 37.

The square root of 199803151 is about 14135.1742472458. The cubic root of 199803151 is about 584.6116213387.

The spelling of 199803151 in words is "one hundred ninety-nine million, eight hundred three thousand, one hundred fifty-one".