981653598 has 48 divisors (see below), whose sum is σ = 2175615936. Its totient is φ = 319775040.

The previous prime is 981653591. The next prime is 981653599. The reversal of 981653598 is 895356189.

It is a happy number.

981653598 is a `hidden beast` number, since 9 + 8 + 16 + 535 + 98 = 666.

981653598 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981653591) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 256636 + ... + 260432.

It is an arithmetic number, because the mean of its divisors is an integer number (45325332).

Almost surely, 2^981653598 is an apocalyptic number.

981653598 is an abundant number, since it is smaller than the sum of its proper divisors (1193962338).

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

981653598 is a wasteful number, since it uses less digits than its factorization.

981653598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4129 (or 4126 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 54.

The square root of 981653598 is about 31331.3516784706. The cubic root of 981653598 is about 993.8467478134.

The spelling of 981653598 in words is "nine hundred eighty-one million, six hundred fifty-three thousand, five hundred ninety-eight".