981523152 has 60 divisors (see below), whose sum is σ = 2908491300. Its totient is φ = 307928064.

The previous prime is 981523141. The next prime is 981523157. The reversal of 981523152 is 251325189.

981523152 is a `hidden beast` number, since 9 + 81 + 523 + 1 + 52 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 386358336 + 595164816 = 19656^2 + 24396^2 .

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 (981523157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 198027 + ... + 202922.

It is an arithmetic number, because the mean of its divisors is an integer number (48474855).

Almost surely, 2^981523152 is an apocalyptic number.

It is an amenable number.

981523152 is an abundant number, since it is smaller than the sum of its proper divisors (1926968148).

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

981523152 is a wasteful number, since it uses less digits than its factorization.

981523152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400980 (or 400971 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 981523152 is about 31329.2698925462. The cubic root of 981523152 is about 993.8027237720.

The spelling of 981523152 in words is "nine hundred eighty-one million, five hundred twenty-three thousand, one hundred fifty-two".