1198200139 has 2 divisors, whose sum is σ = 1198200140. Its totient is φ = 1198200138.

The previous prime is 1198200121. The next prime is 1198200151. The reversal of 1198200139 is 9310028911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1198200139 - 2⁷ = 1198200011 is a prime.

It is not a weakly prime, because it can be changed into another prime (1198209139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 599100069 + 599100070.

It is an arithmetic number, because the mean of its divisors is an integer number (599100070).

Almost surely, 2^1198200139 is an apocalyptic number.

1198200139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1198200139 is an equidigital number, since it uses as much as digits as its factorization.

1198200139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 1198200139 is about 34615.0276469628. The cubic root of 1198200139 is about 1062.1270150833.

The spelling of 1198200139 in words is "one billion, one hundred ninety-eight million, two hundred thousand, one hundred thirty-nine".