181938348 has 18 divisors (see below), whose sum is σ = 459899804. Its totient is φ = 60646104.

The previous prime is 181938313. The next prime is 181938377. The reversal of 181938348 is 843839181.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2526886 + ... + 2526957.

Almost surely, 2^181938348 is an apocalyptic number.

181938348 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

181938348 is an abundant number, since it is smaller than the sum of its proper divisors (277961456).

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

181938348 is a wasteful number, since it uses less digits than its factorization.

181938348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5053853 (or 5053848 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 181938348 is about 13488.4523945485. The cubic root of 181938348 is about 566.6411136497.

The spelling of 181938348 in words is "one hundred eighty-one million, nine hundred thirty-eight thousand, three hundred forty-eight".