981159480 has 160 divisors (see below), whose sum is σ = 3768985440. Its totient is φ = 224259840.

The previous prime is 981159463. The next prime is 981159497. The reversal of 981159480 is 84951189.

It is an interprime number because it is at equal distance from previous prime (981159463) and next prime (981159497).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1050 + ... + 44310.

It is an arithmetic number, because the mean of its divisors is an integer number (23556159).

Almost surely, 2^981159480 is an apocalyptic number.

981159480 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 981159480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1884492720).

981159480 is an abundant number, since it is smaller than the sum of its proper divisors (2787825960).

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

981159480 is a wasteful number, since it uses less digits than its factorization.

981159480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43291 (or 43278 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 45.

The square root of 981159480 is about 31323.4653255351. The cubic root of 981159480 is about 993.6799680089.

It can be divided in two parts, 981 and 159480, that added together give a triangular number (160461 = T₅₆₆).

The spelling of 981159480 in words is "nine hundred eighty-one million, one hundred fifty-nine thousand, four hundred eighty".