981893616 has 80 divisors (see below), whose sum is σ = 2929955328. Its totient is φ = 280038400.

The previous prime is 981893611. The next prime is 981893617. The reversal of 981893616 is 616398189.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981893611) by changing a digit.

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, 45720 + ... + 63671.

Almost surely, 2^981893616 is an apocalyptic number.

It is an amenable number.

981893616 is an abundant number, since it is smaller than the sum of its proper divisors (1948061712).

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

981893616 is a wasteful number, since it uses less digits than its factorization.

981893616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109430 (or 109424 counting only the distinct ones).

The product of its digits is 559872, while the sum is 51.

The square root of 981893616 is about 31335.1817610813. The cubic root of 981893616 is about 993.9277409697.

The spelling of 981893616 in words is "nine hundred eighty-one million, eight hundred ninety-three thousand, six hundred sixteen".