981580924642 has 16 divisors (see below), whose sum is σ = 1509560156664. Its totient is φ = 478414480000.

The previous prime is 981580924637. The next prime is 981580924699. The reversal of 981580924642 is 246429085189.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 571749211881 + 409831712761 = 756141^2 + 640181^2 .

It is a super-2 number, since 2×981580924642² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4971109 + ... + 5164792.

Almost surely, 2^981580924642 is an apocalyptic number.

981580924642 is a deficient number, since it is larger than the sum of its proper divisors (527979232022).

981580924642 is a wasteful number, since it uses less digits than its factorization.

981580924642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10137125.

The product of its (nonzero) digits is 9953280, while the sum is 58.

The spelling of 981580924642 in words is "nine hundred eighty-one billion, five hundred eighty million, nine hundred twenty-four thousand, six hundred forty-two".