981481830 has 32 divisors (see below), whose sum is σ = 2692065024. Its totient is φ = 224338656.

The previous prime is 981481819. The next prime is 981481877. The reversal of 981481830 is 38184189.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2336652 + ... + 2337071.

It is an arithmetic number, because the mean of its divisors is an integer number (84127032).

Almost surely, 2^981481830 is an apocalyptic number.

981481830 is an abundant number, since it is smaller than the sum of its proper divisors (1710583194).

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

981481830 is a wasteful number, since it uses less digits than its factorization.

981481830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4673740.

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 981481830 is about 31328.6104064639. The cubic root of 981481830 is about 993.7887772535.

The spelling of 981481830 in words is "nine hundred eighty-one million, four hundred eighty-one thousand, eight hundred thirty".