981820476 has 72 divisors (see below), whose sum is σ = 3054562784. Its totient is φ = 258940800.

The previous prime is 981820471. The next prime is 981820531. The reversal of 981820476 is 674028189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981820471) 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, 146575 + ... + 153126.

Almost surely, 2^981820476 is an apocalyptic number.

It is an amenable number.

981820476 is an abundant number, since it is smaller than the sum of its proper divisors (2072742308).

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

981820476 is a wasteful number, since it uses less digits than its factorization.

981820476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299731 (or 299726 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 981820476 is about 31334.0146805353. The cubic root of 981820476 is about 993.9030615547.

The spelling of 981820476 in words is "nine hundred eighty-one million, eight hundred twenty thousand, four hundred seventy-six".