181000275742 has 32 divisors (see below), whose sum is σ = 319001294304. Its totient is φ = 75935654400.

The previous prime is 181000275739. The next prime is 181000275767. The reversal of 181000275742 is 247572000181.

It is a super-2 number, since 2×181000275742² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2960442 + ... + 3020962.

It is an arithmetic number, because the mean of its divisors is an integer number (9968790447).

Almost surely, 2^181000275742 is an apocalyptic number.

181000275742 is a deficient number, since it is larger than the sum of its proper divisors (138001018562).

181000275742 is a wasteful number, since it uses less digits than its factorization.

181000275742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71004.

The product of its (nonzero) digits is 31360, while the sum is 37.

The spelling of 181000275742 in words is "one hundred eighty-one billion, two hundred seventy-five thousand, seven hundred forty-two".