181243093380 has 48 divisors (see below), whose sum is σ = 519282544704. Its totient is φ = 47207502720.

The previous prime is 181243093351. The next prime is 181243093387. The reversal of 181243093380 is 83390342181.

It is not an unprimeable number, because it can be changed into a prime (181243093387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35122051 + ... + 35127210.

It is an arithmetic number, because the mean of its divisors is an integer number (10818386348).

Almost surely, 2^181243093380 is an apocalyptic number.

181243093380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

181243093380 is an abundant number, since it is smaller than the sum of its proper divisors (338039451324).

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

181243093380 is a wasteful number, since it uses less digits than its factorization.

181243093380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70249316 (or 70249314 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 181243093380 in words is "one hundred eighty-one billion, two hundred forty-three million, ninety-three thousand, three hundred eighty".