1200118291 has 2 divisors, whose sum is σ = 1200118292. Its totient is φ = 1200118290.

The previous prime is 1200118267. The next prime is 1200118303. The reversal of 1200118291 is 1928110021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1200118291 is a prime.

It is not a weakly prime, because it can be changed into another prime (1200118201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600059145 + 600059146.

It is an arithmetic number, because the mean of its divisors is an integer number (600059146).

Almost surely, 2^1200118291 is an apocalyptic number.

1200118291 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200118291 is an equidigital number, since it uses as much as digits as its factorization.

1200118291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 1200118291 is about 34642.7234928202. The cubic root of 1200118291 is about 1062.6934855200.

The spelling of 1200118291 in words is "one billion, two hundred million, one hundred eighteen thousand, two hundred ninety-one".