981481455 has 20 divisors (see below), whose sum is σ = 1759397112. Its totient is φ = 523456560.

The previous prime is 981481441. The next prime is 981481469. The reversal of 981481455 is 554184189.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (981481441) and next prime (981481469).

It is not a de Polignac number, because 981481455 - 2⁹ = 981480943 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 981481455.

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 1211301 + ... + 1212110.

Almost surely, 2^981481455 is an apocalyptic number.

981481455 is a deficient number, since it is larger than the sum of its proper divisors (777915657).

981481455 is a wasteful number, since it uses less digits than its factorization.

981481455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2423428 (or 2423419 counting only the distinct ones).

The product of its digits is 230400, while the sum is 45.

The square root of 981481455 is about 31328.6044215187. The cubic root of 981481455 is about 993.7886506861.

The spelling of 981481455 in words is "nine hundred eighty-one million, four hundred eighty-one thousand, four hundred fifty-five".