199157612 has 12 divisors (see below), whose sum is σ = 355941600. Its totient is φ = 97460016.

The previous prime is 199157611. The next prime is 199157617. The reversal of 199157612 is 216751991.

It is a self number, because there is not a number n which added to its sum of digits gives 199157612.

It is not an unprimeable number, because it can be changed into a prime (199157611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 529487 + ... + 529862.

It is an arithmetic number, because the mean of its divisors is an integer number (29661800).

Almost surely, 2^199157612 is an apocalyptic number.

It is an amenable number.

199157612 is a deficient number, since it is larger than the sum of its proper divisors (156783988).

199157612 is a wasteful number, since it uses less digits than its factorization.

199157612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059400 (or 1059398 counting only the distinct ones).

The product of its digits is 34020, while the sum is 41.

The square root of 199157612 is about 14112.3212831908. The cubic root of 199157612 is about 583.9813397115.

The spelling of 199157612 in words is "one hundred ninety-nine million, one hundred fifty-seven thousand, six hundred twelve".