989160818 has 4 divisors (see below), whose sum is σ = 1483741230. Its totient is φ = 494580408.

The previous prime is 989160791. The next prime is 989160829. The reversal of 989160818 is 818061989.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 818061989 = 4229 ⋅193441.

It can be written as a sum of positive squares in only one way, i.e., 988913809 + 247009 = 31447^2 + 497^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 247290203 + ... + 247290206.

Almost surely, 2^989160818 is an apocalyptic number.

989160818 is a deficient number, since it is larger than the sum of its proper divisors (494580412).

989160818 is a wasteful number, since it uses less digits than its factorization.

989160818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494580411.

The product of its (nonzero) digits is 248832, while the sum is 50.

The square root of 989160818 is about 31450.9271405471. The cubic root of 989160818 is about 996.3738059440.

The spelling of 989160818 in words is "nine hundred eighty-nine million, one hundred sixty thousand, eight hundred eighteen".