1020002198 has 4 divisors (see below), whose sum is σ = 1530003300. Its totient is φ = 510001098.

The previous prime is 1020002197. The next prime is 1020002201. The reversal of 1020002198 is 8912000201.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020002197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255000548 + ... + 255000551.

It is an arithmetic number, because the mean of its divisors is an integer number (382500825).

Almost surely, 2^1020002198 is an apocalyptic number.

1020002198 is a deficient number, since it is larger than the sum of its proper divisors (510001102).

1020002198 is an equidigital number, since it uses as much as digits as its factorization.

1020002198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510001101.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1020002198 is about 31937.4732563489. The cubic root of 1020002198 is about 1006.6234326173.

Adding to 1020002198 its reverse (8912000201), we get a palindrome (9932002399).

The spelling of 1020002198 in words is "one billion, twenty million, two thousand, one hundred ninety-eight".