181957642124 has 12 divisors (see below), whose sum is σ = 318459420048. Its totient is φ = 90969236400.

The previous prime is 181957642117. The next prime is 181957642169. The reversal of 181957642124 is 421246759181.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2353367 + ... + 2429454.

It is an arithmetic number, because the mean of its divisors is an integer number (26538285004).

Almost surely, 2^181957642124 is an apocalyptic number.

It is an amenable number.

181957642124 is a deficient number, since it is larger than the sum of its proper divisors (136501777924).

181957642124 is a wasteful number, since it uses less digits than its factorization.

181957642124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4792336 (or 4792334 counting only the distinct ones).

The product of its digits is 967680, while the sum is 50.

The spelling of 181957642124 in words is "one hundred eighty-one billion, nine hundred fifty-seven million, six hundred forty-two thousand, one hundred twenty-four".