1118785001 has 2 divisors, whose sum is σ = 1118785002. Its totient is φ = 1118785000.

The previous prime is 1118784949. The next prime is 1118785013. The reversal of 1118785001 is 1005878111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 823632601 + 295152400 = 28699^2 + 17180^2 .

It is a cyclic number.

It is not a de Polignac number, because 1118785001 - 2¹⁰ = 1118783977 is a prime.

It is not a weakly prime, because it can be changed into another prime (1118785601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559392500 + 559392501.

It is an arithmetic number, because the mean of its divisors is an integer number (559392501).

Almost surely, 2^1118785001 is an apocalyptic number.

It is an amenable number.

1118785001 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118785001 is an equidigital number, since it uses as much as digits as its factorization.

1118785001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 32.

The square root of 1118785001 is about 33448.2436160705. The cubic root of 1118785001 is about 1038.1231562125.

The spelling of 1118785001 in words is "one billion, one hundred eighteen million, seven hundred eighty-five thousand, one".