981535902 has 48 divisors (see below), whose sum is σ = 2176094592. Its totient is φ = 294532480.

The previous prime is 981535873. The next prime is 981535903. The reversal of 981535902 is 209535189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981535903) 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 23 ways as a sum of consecutive naturals, for example, 27577 + ... + 52187.

It is an arithmetic number, because the mean of its divisors is an integer number (45335304).

Almost surely, 2^981535902 is an apocalyptic number.

981535902 is an abundant number, since it is smaller than the sum of its proper divisors (1194558690).

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

981535902 is a wasteful number, since it uses less digits than its factorization.

981535902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24673 (or 24656 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 42.

The square root of 981535902 is about 31329.4733757208. The cubic root of 981535902 is about 993.8070269240.

The spelling of 981535902 in words is "nine hundred eighty-one million, five hundred thirty-five thousand, nine hundred two".