118971898 has 4 divisors (see below), whose sum is σ = 178457850. Its totient is φ = 59485948.

The previous prime is 118971889. The next prime is 118971917. The reversal of 118971898 is 898179811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 898179811 = 383 ⋅2345117.

It can be written as a sum of positive squares in only one way, i.e., 77845329 + 41126569 = 8823^2 + 6413^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29742973 + ... + 29742976.

Almost surely, 2^118971898 is an apocalyptic number.

118971898 is a deficient number, since it is larger than the sum of its proper divisors (59485952).

118971898 is an equidigital number, since it uses as much as digits as its factorization.

118971898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59485951.

The product of its digits is 290304, while the sum is 52.

The square root of 118971898 is about 10907.4239855247. The cubic root of 118971898 is about 491.8297519443.

The spelling of 118971898 in words is "one hundred eighteen million, nine hundred seventy-one thousand, eight hundred ninety-eight".