981150885 has 144 divisors (see below), whose sum is σ = 2049570432. Its totient is φ = 431228160.

The previous prime is 981150883. The next prime is 981150887. The reversal of 981150885 is 588051189.

It is an interprime number because it is at equal distance from previous prime (981150883) and next prime (981150887).

It is not a de Polignac number, because 981150885 - 2¹ = 981150883 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 981150885.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981150883) by changing a digit.

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 143 ways as a sum of consecutive naturals, for example, 5875072 + ... + 5875238.

It is an arithmetic number, because the mean of its divisors is an integer number (14233128).

Almost surely, 2^981150885 is an apocalyptic number.

It is an amenable number.

981150885 is an abundant number, since it is smaller than the sum of its proper divisors (1068419547).

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

981150885 is a wasteful number, since it uses less digits than its factorization.

981150885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 45.

The square root of 981150885 is about 31323.3281277708. The cubic root of 981150885 is about 993.6770664404.

The spelling of 981150885 in words is "nine hundred eighty-one million, one hundred fifty thousand, eight hundred eighty-five".