199166572 has 24 divisors (see below), whose sum is σ = 381652992. Its totient is φ = 90190800.

The previous prime is 199166533. The next prime is 199166581. The reversal of 199166572 is 275661991.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3573 + ... + 20275.

It is an arithmetic number, because the mean of its divisors is an integer number (15902208).

Almost surely, 2^199166572 is an apocalyptic number.

It is an amenable number.

199166572 is a deficient number, since it is larger than the sum of its proper divisors (182486420).

199166572 is a wasteful number, since it uses less digits than its factorization.

199166572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16989 (or 16987 counting only the distinct ones).

The product of its digits is 204120, while the sum is 46.

The square root of 199166572 is about 14112.6387327105. The cubic root of 199166572 is about 583.9900972550.

The spelling of 199166572 in words is "one hundred ninety-nine million, one hundred sixty-six thousand, five hundred seventy-two".