199118741 has 2 divisors, whose sum is σ = 199118742. Its totient is φ = 199118740.

The previous prime is 199118737. The next prime is 199118753. The reversal of 199118741 is 147811991.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195300625 + 3818116 = 13975^2 + 1954^2 .

It is a cyclic number.

It is not a de Polignac number, because 199118741 - 2² = 199118737 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199118041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99559370 + 99559371.

It is an arithmetic number, because the mean of its divisors is an integer number (99559371).

Almost surely, 2^199118741 is an apocalyptic number.

It is an amenable number.

199118741 is a deficient number, since it is larger than the sum of its proper divisors (1).

199118741 is an equidigital number, since it uses as much as digits as its factorization.

199118741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 41.

The square root of 199118741 is about 14110.9440151961. The cubic root of 199118741 is about 583.9433439830.

The spelling of 199118741 in words is "one hundred ninety-nine million, one hundred eighteen thousand, seven hundred forty-one".