1355220198 has 12 divisors (see below), whose sum is σ = 2936310468. Its totient is φ = 451740060.

The previous prime is 1355220179. The next prime is 1355220203. The reversal of 1355220198 is 8910225531.

1355220198 is a `hidden beast` number, since 13 + 552 + 2 + 0 + 1 + 98 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37644988 + ... + 37645023.

It is an arithmetic number, because the mean of its divisors is an integer number (244692539).

Almost surely, 2^1355220198 is an apocalyptic number.

1355220198 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1355220198 is an abundant number, since it is smaller than the sum of its proper divisors (1581090270).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1355220198 is a wasteful number, since it uses less digits than its factorization.

1355220198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75290019 (or 75290016 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 1355220198 is about 36813.3154986073. The cubic root of 1355220198 is about 1106.6321635870.

The spelling of 1355220198 in words is "one billion, three hundred fifty-five million, two hundred twenty thousand, one hundred ninety-eight".