198693370 has 16 divisors (see below), whose sum is σ = 358613640. Its totient is φ = 79262784.

The previous prime is 198693347. The next prime is 198693373. The reversal of 198693370 is 73396891.

It can be written as a sum of positive squares in 4 ways, for example, as 118178641 + 80514729 = 10871^2 + 8973^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 198693370.

It is not an unprimeable number, because it can be changed into a prime (198693373) 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 7 ways as a sum of consecutive naturals, for example, 22905 + ... + 30364.

Almost surely, 2^198693370 is an apocalyptic number.

198693370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198693370 is a deficient number, since it is larger than the sum of its proper divisors (159920270).

198693370 is a wasteful number, since it uses less digits than its factorization.

198693370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53649.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 198693370 is about 14095.8635776599. The cubic root of 198693370 is about 583.5272276984.

The spelling of 198693370 in words is "one hundred ninety-eight million, six hundred ninety-three thousand, three hundred seventy".