198402975 has 36 divisors (see below), whose sum is σ = 356200416. Its totient is φ = 105565440.

The previous prime is 198402973. The next prime is 198402979. The reversal of 198402975 is 579204891.

It is not a de Polignac number, because 198402975 - 2¹ = 198402973 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 198402975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198402973) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 132682 + ... + 134168.

It is an arithmetic number, because the mean of its divisors is an integer number (9894456).

Almost surely, 2^198402975 is an apocalyptic number.

198402975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

198402975 is a deficient number, since it is larger than the sum of its proper divisors (157797441).

198402975 is a wasteful number, since it uses less digits than its factorization.

198402975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096 (or 2088 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 198402975 is about 14085.5590943349. The cubic root of 198402975 is about 583.2428095357.

The spelling of 198402975 in words is "one hundred ninety-eight million, four hundred two thousand, nine hundred seventy-five".