1198990019 has 8 divisors (see below), whose sum is σ = 1229760672. Its totient is φ = 1168292160.

The previous prime is 1198989989. The next prime is 1198990057. The reversal of 1198990019 is 9100998911.

It is a happy number.

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 1198990019 - 2⁸ = 1198989763 is a prime.

It is a super-2 number, since 2×1198990019² = 2875154131323240722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1198992019) 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, 15977 + ... + 51509.

It is an arithmetic number, because the mean of its divisors is an integer number (153720084).

Almost surely, 2^1198990019 is an apocalyptic number.

1198990019 is a deficient number, since it is larger than the sum of its proper divisors (30770653).

1198990019 is an equidigital number, since it uses as much as digits as its factorization.

1198990019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36397.

The product of its (nonzero) digits is 52488, while the sum is 47.

The square root of 1198990019 is about 34626.4352626718. The cubic root of 1198990019 is about 1062.3603563465.

The spelling of 1198990019 in words is "one billion, one hundred ninety-eight million, nine hundred ninety thousand, nineteen".