981338831454 has 16 divisors (see below), whose sum is σ = 1982110116240. Its totient is φ = 323874201600.

The previous prime is 981338831419. The next prime is 981338831483. The reversal of 981338831454 is 454138833189.

It is a junction number, because it is equal to n+sod(n) for n = 981338831394 and 981338831403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 809684899 + ... + 809686110.

It is an arithmetic number, because the mean of its divisors is an integer number (123881882265).

Almost surely, 2^981338831454 is an apocalyptic number.

981338831454 is an abundant number, since it is smaller than the sum of its proper divisors (1000771284786).

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

981338831454 is a wasteful number, since it uses less digits than its factorization.

981338831454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1619371115.

The product of its digits is 9953280, while the sum is 57.

The spelling of 981338831454 in words is "nine hundred eighty-one billion, three hundred thirty-eight million, eight hundred thirty-one thousand, four hundred fifty-four".