981481542 has 16 divisors (see below), whose sum is σ = 2004728832. Its totient is φ = 320199560.

The previous prime is 981481477. The next prime is 981481559. The reversal of 981481542 is 245184189.

It is a junction number, because it is equal to n+sod(n) for n = 981481494 and 981481503.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1739934 + ... + 1740497.

It is an arithmetic number, because the mean of its divisors is an integer number (125295552).

Almost surely, 2^981481542 is an apocalyptic number.

981481542 is an abundant number, since it is smaller than the sum of its proper divisors (1023247290).

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

981481542 is a wasteful number, since it uses less digits than its factorization.

981481542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3480483.

The product of its digits is 92160, while the sum is 42.

The square root of 981481542 is about 31328.6058100261. The cubic root of 981481542 is about 993.7886800497.

The spelling of 981481542 in words is "nine hundred eighty-one million, four hundred eighty-one thousand, five hundred forty-two".