199488261 has 12 divisors (see below), whose sum is σ = 309410592. Its totient is φ = 113993208.

The previous prime is 199488253. The next prime is 199488271. The reversal of 199488261 is 162884991.

It is not a de Polignac number, because 199488261 - 2³ = 199488253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199488261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199488221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 678385 + ... + 678678.

It is an arithmetic number, because the mean of its divisors is an integer number (25784216).

Almost surely, 2^199488261 is an apocalyptic number.

It is an amenable number.

199488261 is a deficient number, since it is larger than the sum of its proper divisors (109922331).

199488261 is a wasteful number, since it uses less digits than its factorization.

199488261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1357080 (or 1357073 counting only the distinct ones).

The product of its digits is 248832, while the sum is 48.

The square root of 199488261 is about 14124.0313296169. The cubic root of 199488261 is about 584.3043436588.

The spelling of 199488261 in words is "one hundred ninety-nine million, four hundred eighty-eight thousand, two hundred sixty-one".