199144851 has 8 divisors (see below), whose sum is σ = 281145744. Its totient is φ = 124953600.

The previous prime is 199144849. The next prime is 199144861. The reversal of 199144851 is 158441991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 199144851 - 2¹ = 199144849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (199144801) 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, 1952350 + ... + 1952451.

It is an arithmetic number, because the mean of its divisors is an integer number (35143218).

Almost surely, 2^199144851 is an apocalyptic number.

199144851 is a deficient number, since it is larger than the sum of its proper divisors (82000893).

199144851 is a wasteful number, since it uses less digits than its factorization.

199144851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3904821.

The product of its digits is 51840, while the sum is 42.

The square root of 199144851 is about 14111.8691533050. The cubic root of 199144851 is about 583.9688666004.

The spelling of 199144851 in words is "one hundred ninety-nine million, one hundred forty-four thousand, eight hundred fifty-one".