987760181 has 16 divisors (see below), whose sum is σ = 1028016000. Its totient is φ = 948423168.

The previous prime is 987760171. The next prime is 987760243. The reversal of 987760181 is 181067789.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-987760181 is a prime.

It is a super-2 number, since 2×987760181² = 1951340350338305522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987760141) 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, 760925 + ... + 762221.

It is an arithmetic number, because the mean of its divisors is an integer number (64251000).

Almost surely, 2^987760181 is an apocalyptic number.

It is an amenable number.

987760181 is a deficient number, since it is larger than the sum of its proper divisors (40255819).

987760181 is a wasteful number, since it uses less digits than its factorization.

987760181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1628.

The product of its (nonzero) digits is 169344, while the sum is 47.

The square root of 987760181 is about 31428.6522300909. The cubic root of 987760181 is about 995.9033003032.

The spelling of 987760181 in words is "nine hundred eighty-seven million, seven hundred sixty thousand, one hundred eighty-one".