981092945920 has 312 divisors, whose sum is σ = 2610072503424. Its totient is φ = 353244807168.

The previous prime is 981092945863. The next prime is 981092945933. The reversal of 981092945920 is 29549290189.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136126957 + ... + 136134163.

Almost surely, 2^981092945920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 981092945920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1305036251712).

981092945920 is an abundant number, since it is smaller than the sum of its proper divisors (1628979557504).

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

981092945920 is a wasteful number, since it uses less digits than its factorization.

981092945920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7293 (or 7254 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 58.

The spelling of 981092945920 in words is "nine hundred eighty-one billion, ninety-two million, nine hundred forty-five thousand, nine hundred twenty".