181341648730 has 64 divisors (see below), whose sum is σ = 371799445248. Its totient is φ = 63036610560.

The previous prime is 181341648727. The next prime is 181341648737. The reversal of 181341648730 is 37846143181.

It is a super-2 number, since 2×181341648730² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (181341648737) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4262122 + ... + 4304458.

It is an arithmetic number, because the mean of its divisors is an integer number (5809366332).

Almost surely, 2^181341648730 is an apocalyptic number.

181341648730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

181341648730 is an abundant number, since it is smaller than the sum of its proper divisors (190457796518).

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

181341648730 is a wasteful number, since it uses less digits than its factorization.

181341648730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44071.

The product of its (nonzero) digits is 387072, while the sum is 46.

The spelling of 181341648730 in words is "one hundred eighty-one billion, three hundred forty-one million, six hundred forty-eight thousand, seven hundred thirty".