981153212 has 24 divisors (see below), whose sum is σ = 1850991072. Its totient is φ = 452376000.

The previous prime is 981153211. The next prime is 981153241. The reversal of 981153212 is 212351189.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981153211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44462 + ... + 62762.

It is an arithmetic number, because the mean of its divisors is an integer number (77124628).

Almost surely, 2^981153212 is an apocalyptic number.

It is an amenable number.

981153212 is a deficient number, since it is larger than the sum of its proper divisors (869837860).

981153212 is a wasteful number, since it uses less digits than its factorization.

981153212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19349 (or 19347 counting only the distinct ones).

The product of its digits is 4320, while the sum is 32.

The square root of 981153212 is about 31323.3652725884. The cubic root of 981153212 is about 993.6778520093.

The spelling of 981153212 in words is "nine hundred eighty-one million, one hundred fifty-three thousand, two hundred twelve".