981841212 has 72 divisors (see below), whose sum is σ = 2710955520. Its totient is φ = 297148320.

The previous prime is 981841199. The next prime is 981841219. The reversal of 981841212 is 212148189.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981841219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 568983 + ... + 570705.

It is an arithmetic number, because the mean of its divisors is an integer number (37652160).

Almost surely, 2^981841212 is an apocalyptic number.

It is an amenable number.

981841212 is an abundant number, since it is smaller than the sum of its proper divisors (1729114308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

981841212 is a wasteful number, since it uses less digits than its factorization.

981841212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3183 (or 3178 counting only the distinct ones).

The product of its digits is 9216, while the sum is 36.

The square root of 981841212 is about 31334.3455652101. The cubic root of 981841212 is about 993.9100585667.

The spelling of 981841212 in words is "nine hundred eighty-one million, eight hundred forty-one thousand, two hundred twelve".