199652457 has 8 divisors (see below), whose sum is σ = 268839360. Its totient is φ = 131783600.

The previous prime is 199652449. The next prime is 199652473. The reversal of 199652457 is 754256991.

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

It is a cyclic number.

It is not a de Polignac number, because 199652457 - 2³ = 199652449 is a prime.

It is a super-2 number, since 2×199652457² = 79722207172273698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (199652417) 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, 329157 + ... + 329762.

It is an arithmetic number, because the mean of its divisors is an integer number (33604920).

Almost surely, 2^199652457 is an apocalyptic number.

It is an amenable number.

199652457 is a deficient number, since it is larger than the sum of its proper divisors (69186903).

199652457 is a wasteful number, since it uses less digits than its factorization.

199652457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659023.

The product of its digits is 680400, while the sum is 48.

The square root of 199652457 is about 14129.8427804417. The cubic root of 199652457 is about 584.4646106091.

It can be divided in two parts, 19965 and 2457, that added together give a palindrome (22422).

The spelling of 199652457 in words is "one hundred ninety-nine million, six hundred fifty-two thousand, four hundred fifty-seven".