181370982 has 64 divisors (see below), whose sum is σ = 404139456. Its totient is φ = 53913600.

The previous prime is 181370963. The next prime is 181370999. The reversal of 181370982 is 289073181.

It is a super-2 number, since 2×181370982² = 65790866223288648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 181370982.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 301482 + ... + 302082.

It is an arithmetic number, because the mean of its divisors is an integer number (6314679).

Almost surely, 2^181370982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 181370982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (202069728).

181370982 is an abundant number, since it is smaller than the sum of its proper divisors (222768474).

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

181370982 is a wasteful number, since it uses less digits than its factorization.

181370982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 181370982 is about 13467.4044269859. The cubic root of 181370982 is about 566.0514859498.

The spelling of 181370982 in words is "one hundred eighty-one million, three hundred seventy thousand, nine hundred eighty-two".