198563402 has 4 divisors (see below), whose sum is σ = 297845106. Its totient is φ = 99281700.

The previous prime is 198563389. The next prime is 198563429. The reversal of 198563402 is 204365891.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 197149681 + 1413721 = 14041^2 + 1189^2 .

It is a super-2 number, since 2×198563402² = 78854849227627208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49640849 + ... + 49640852.

Almost surely, 2^198563402 is an apocalyptic number.

198563402 is a deficient number, since it is larger than the sum of its proper divisors (99281704).

198563402 is an equidigital number, since it uses as much as digits as its factorization.

198563402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99281703.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 198563402 is about 14091.2526767495. The cubic root of 198563402 is about 583.3999689501.

The spelling of 198563402 in words is "one hundred ninety-eight million, five hundred sixty-three thousand, four hundred two".