118798257 has 8 divisors (see below), whose sum is σ = 158483520. Its totient is φ = 79155920.

The previous prime is 118798249. The next prime is 118798259. The reversal of 118798257 is 752897811.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 118798257 - 2³ = 118798249 is a prime.

It is a super-2 number, since 2×118798257² = 28226051732476098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (118798259) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3594 + ... + 15827.

It is an arithmetic number, because the mean of its divisors is an integer number (19810440).

Almost surely, 2^118798257 is an apocalyptic number.

It is an amenable number.

118798257 is a deficient number, since it is larger than the sum of its proper divisors (39685263).

118798257 is a wasteful number, since it uses less digits than its factorization.

118798257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21463.

The product of its digits is 282240, while the sum is 48.

The square root of 118798257 is about 10899.4613169642. The cubic root of 118798257 is about 491.5903581786.

The spelling of 118798257 in words is "one hundred eighteen million, seven hundred ninety-eight thousand, two hundred fifty-seven".