71149118 has 4 divisors (see below), whose sum is σ = 106723680. Its totient is φ = 35574558.

The previous prime is 71149087. The next prime is 71149157. The reversal of 71149118 is 81194117.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81194117 = 23 ⋅3530179.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17787278 + ... + 17787281.

It is an arithmetic number, because the mean of its divisors is an integer number (26680920).

Almost surely, 2^71149118 is an apocalyptic number.

71149118 is a deficient number, since it is larger than the sum of its proper divisors (35574562).

71149118 is a wasteful number, since it uses less digits than its factorization.

71149118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35574561.

The product of its digits is 2016, while the sum is 32.

The square root of 71149118 is about 8434.9936573776. The cubic root of 71149118 is about 414.3714644650.

The spelling of 71149118 in words is "seventy-one million, one hundred forty-nine thousand, one hundred eighteen".