981481603 has 4 divisors (see below), whose sum is σ = 983449000. Its totient is φ = 979514208.

The previous prime is 981481601. The next prime is 981481609. The reversal of 981481603 is 306184189.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 981481603 - 2¹ = 981481601 is a prime.

It is a super-2 number, since 2×981481603² = 1926612274054899218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981481601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 982950 + ... + 983947.

It is an arithmetic number, because the mean of its divisors is an integer number (245862250).

Almost surely, 2^981481603 is an apocalyptic number.

981481603 is a deficient number, since it is larger than the sum of its proper divisors (1967397).

981481603 is a wasteful number, since it uses less digits than its factorization.

981481603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1967396.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 981481603 is about 31328.6067835772. The cubic root of 981481603 is about 993.7887006380.

The spelling of 981481603 in words is "nine hundred eighty-one million, four hundred eighty-one thousand, six hundred three".