118551799 has 4 divisors (see below), whose sum is σ = 119307064. Its totient is φ = 117796536.

The previous prime is 118551793. The next prime is 118551809. The reversal of 118551799 is 997155811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 118551799 - 2³ = 118551791 is a prime.

It is a super-2 number, since 2×118551799² = 28109058092272802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118551791) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 377397 + ... + 377710.

It is an arithmetic number, because the mean of its divisors is an integer number (29826766).

Almost surely, 2^118551799 is an apocalyptic number.

118551799 is a deficient number, since it is larger than the sum of its proper divisors (755265).

118551799 is an equidigital number, since it uses as much as digits as its factorization.

118551799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755264.

The product of its digits is 113400, while the sum is 46.

The square root of 118551799 is about 10888.1494754618. The cubic root of 118551799 is about 491.2501728941.

The spelling of 118551799 in words is "one hundred eighteen million, five hundred fifty-one thousand, seven hundred ninety-nine".