1219498898 has 4 divisors (see below), whose sum is σ = 1829248350. Its totient is φ = 609749448.

The previous prime is 1219498849. The next prime is 1219498909. The reversal of 1219498898 is 8988949121.

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., 987027889 + 232471009 = 31417^2 + 15247^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304874723 + ... + 304874726.

Almost surely, 2^1219498898 is an apocalyptic number.

1219498898 is a deficient number, since it is larger than the sum of its proper divisors (609749452).

1219498898 is an equidigital number, since it uses as much as digits as its factorization.

1219498898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609749451.

The product of its digits is 2985984, while the sum is 59.

The square root of 1219498898 is about 34921.3244021472. The cubic root of 1219498898 is about 1068.3834143809.

The spelling of 1219498898 in words is "one billion, two hundred nineteen million, four hundred ninety-eight thousand, eight hundred ninety-eight".