181427968 has 18 divisors (see below), whose sum is σ = 362147744. Its totient is φ = 90713856.

The previous prime is 181427963. The next prime is 181427971. The reversal of 181427968 is 869724181.

It is a super-2 number, since 2×181427968² = 65832215145218048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181427963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354096 + ... + 354607.

Almost surely, 2^181427968 is an apocalyptic number.

It is an amenable number.

181427968 is a deficient number, since it is larger than the sum of its proper divisors (180719776).

181427968 is an frugal number, since it uses more digits than its factorization.

181427968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708719 (or 708705 counting only the distinct ones).

The product of its digits is 193536, while the sum is 46.

The square root of 181427968 is about 13469.5199617507. The cubic root of 181427968 is about 566.1107634077.

The spelling of 181427968 in words is "one hundred eighty-one million, four hundred twenty-seven thousand, nine hundred sixty-eight".