199071948 has 18 divisors (see below), whose sum is σ = 464615284. Its totient is φ = 66341024.

The previous prime is 199071947. The next prime is 199071953. The reversal of 199071948 is 849170991.

It is a junction number, because it is equal to n+sod(n) for n = 199071897 and 199071906.

It is not an unprimeable number, because it can be changed into a prime (199071947) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46840 + ... + 50912.

Almost surely, 2^199071948 is an apocalyptic number.

It is an amenable number.

199071948 is an abundant number, since it is smaller than the sum of its proper divisors (265543336).

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

199071948 is an frugal number, since it uses more digits than its factorization.

199071948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8153 (or 4078 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 48.

The square root of 199071948 is about 14109.2858784561. The cubic root of 199071948 is about 583.8975980771.

Multiplying 199071948 by its sum of digits (48), we get a square (9555453504 = 97752²).

The spelling of 199071948 in words is "one hundred ninety-nine million, seventy-one thousand, nine hundred forty-eight".