198151864 has 32 divisors (see below), whose sum is σ = 396036000. Its totient is φ = 92620800.

The previous prime is 198151861. The next prime is 198151873. The reversal of 198151864 is 468151891.

It is a super-2 number, since 2×198151864² = 78528322413348992, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 198151864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198151861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15712 + ... + 25360.

It is an arithmetic number, because the mean of its divisors is an integer number (12376125).

Almost surely, 2^198151864 is an apocalyptic number.

It is an amenable number.

198151864 is a deficient number, since it is larger than the sum of its proper divisors (197884136).

198151864 is a wasteful number, since it uses less digits than its factorization.

198151864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9823 (or 9819 counting only the distinct ones).

The product of its digits is 69120, while the sum is 43.

The square root of 198151864 is about 14076.6424974139. The cubic root of 198151864 is about 582.9966430024.

The spelling of 198151864 in words is "one hundred ninety-eight million, one hundred fifty-one thousand, eight hundred sixty-four".