981473218 has 16 divisors (see below), whose sum is σ = 1630020384. Its totient is φ = 439464960.

The previous prime is 981473203. The next prime is 981473219. The reversal of 981473218 is 812374189.

It is not an unprimeable number, because it can be changed into a prime (981473219) 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, 331455 + ... + 334402.

It is an arithmetic number, because the mean of its divisors is an integer number (101876274).

Almost surely, 2^981473218 is an apocalyptic number.

981473218 is a deficient number, since it is larger than the sum of its proper divisors (648547166).

981473218 is a wasteful number, since it uses less digits than its factorization.

981473218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665937.

The product of its digits is 96768, while the sum is 43.

The square root of 981473218 is about 31328.4729599130. The cubic root of 981473218 is about 993.7858705826.

The spelling of 981473218 in words is "nine hundred eighty-one million, four hundred seventy-three thousand, two hundred eighteen".