199266481 has 4 divisors (see below), whose sum is σ = 205694464. Its totient is φ = 192838500.

The previous prime is 199266479. The next prime is 199266499. The reversal of 199266481 is 184662991.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 184662991 = 743 ⋅248537.

It is a cyclic number.

It is not a de Polignac number, because 199266481 - 2¹ = 199266479 is a prime.

It is a super-2 number, since 2×199266481² = 79414260900246722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199263481) 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, 3213945 + ... + 3214006.

It is an arithmetic number, because the mean of its divisors is an integer number (51423616).

Almost surely, 2^199266481 is an apocalyptic number.

It is an amenable number.

199266481 is a deficient number, since it is larger than the sum of its proper divisors (6427983).

199266481 is an equidigital number, since it uses as much as digits as its factorization.

199266481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6427982.

The product of its digits is 186624, while the sum is 46.

The square root of 199266481 is about 14116.1779883933. The cubic root of 199266481 is about 584.0877309637.

The spelling of 199266481 in words is "one hundred ninety-nine million, two hundred sixty-six thousand, four hundred eighty-one".