118817001 has 6 divisors (see below), whose sum is σ = 171624570. Its totient is φ = 79211328.

The previous prime is 118816979. The next prime is 118817003. The reversal of 118817001 is 100718811.

It can be written as a sum of positive squares in only one way, i.e., 67322025 + 51494976 = 8205^2 + 7176^2 .

It is not a de Polignac number, because 118817001 - 2²¹ = 116719849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118817003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6600936 + ... + 6600953.

It is an arithmetic number, because the mean of its divisors is an integer number (28604095).

Almost surely, 2^118817001 is an apocalyptic number.

It is an amenable number.

118817001 is a deficient number, since it is larger than the sum of its proper divisors (52807569).

118817001 is a wasteful number, since it uses less digits than its factorization.

118817001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13201895 (or 13201892 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 27.

The square root of 118817001 is about 10900.3211420582. The cubic root of 118817001 is about 491.6162112097.

The spelling of 118817001 in words is "one hundred eighteen million, eight hundred seventeen thousand, one".