1289248198 has 16 divisors (see below), whose sum is σ = 2264046624. Its totient is φ = 539058240.

The previous prime is 1289248151. The next prime is 1289248199. The reversal of 1289248198 is 8918429821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1289248199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1122465 + ... + 1123612.

It is an arithmetic number, because the mean of its divisors is an integer number (141502914).

Almost surely, 2^1289248198 is an apocalyptic number.

1289248198 is a deficient number, since it is larger than the sum of its proper divisors (974798426).

1289248198 is a wasteful number, since it uses less digits than its factorization.

1289248198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2246127.

The product of its digits is 663552, while the sum is 52.

The square root of 1289248198 is about 35906.1025175387. The cubic root of 1289248198 is about 1088.3757189576.

The spelling of 1289248198 in words is "one billion, two hundred eighty-nine million, two hundred forty-eight thousand, one hundred ninety-eight".