981445532 has 24 divisors (see below), whose sum is σ = 1821141840. Its totient is φ = 461496960.

The previous prime is 981445511. The next prime is 981445541. The reversal of 981445532 is 235544189.

It is a self number, because there is not a number n which added to its sum of digits gives 981445532.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36719 + ... + 57542.

It is an arithmetic number, because the mean of its divisors is an integer number (75880910).

Almost surely, 2^981445532 is an apocalyptic number.

It is an amenable number.

981445532 is a deficient number, since it is larger than the sum of its proper divisors (839696308).

981445532 is a wasteful number, since it uses less digits than its factorization.

981445532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94421 (or 94419 counting only the distinct ones).

The product of its digits is 172800, while the sum is 41.

The square root of 981445532 is about 31328.0310903829. The cubic root of 981445532 is about 993.7765260538.

The spelling of 981445532 in words is "nine hundred eighty-one million, four hundred forty-five thousand, five hundred thirty-two".