981516790 has 16 divisors (see below), whose sum is σ = 1767239280. Its totient is φ = 392493600.

The previous prime is 981516751. The next prime is 981516793. The reversal of 981516790 is 97615189.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 981516790.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (981516793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28396 + ... + 52624.

It is an arithmetic number, because the mean of its divisors is an integer number (110452455).

Almost surely, 2^981516790 is an apocalyptic number.

981516790 is a deficient number, since it is larger than the sum of its proper divisors (785722490).

981516790 is a wasteful number, since it uses less digits than its factorization.

981516790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28287.

The product of its (nonzero) digits is 136080, while the sum is 46.

The square root of 981516790 is about 31329.1683579376. The cubic root of 981516790 is about 993.8005765696.

The spelling of 981516790 in words is "nine hundred eighty-one million, five hundred sixteen thousand, seven hundred ninety".