1198289149 has 8 divisors (see below), whose sum is σ = 1281340728. Its totient is φ = 1116633600.

The previous prime is 1198289089. The next prime is 1198289173. The reversal of 1198289149 is 9419828911.

It can be written as a sum of positive squares in 4 ways, for example, as 859545124 + 338744025 = 29318^2 + 18405^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1198289149 - 2⁷ = 1198289021 is a prime.

It is a super-2 number, since 2×1198289149² = 2871793769222288402, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1198289096 and 1198289105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198289249) 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, 347232 + ... + 350665.

It is an arithmetic number, because the mean of its divisors is an integer number (160167591).

Almost surely, 2^1198289149 is an apocalyptic number.

It is an amenable number.

1198289149 is a deficient number, since it is larger than the sum of its proper divisors (83051579).

1198289149 is a wasteful number, since it uses less digits than its factorization.

1198289149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698015.

The product of its digits is 373248, while the sum is 52.

The square root of 1198289149 is about 34616.3133363448. The cubic root of 1198289149 is about 1062.1533149703.

The spelling of 1198289149 in words is "one billion, one hundred ninety-eight million, two hundred eighty-nine thousand, one hundred forty-nine".