180848921 has 4 divisors (see below), whose sum is σ = 197289744. Its totient is φ = 164408100.

The previous prime is 180848851. The next prime is 180848951. The reversal of 180848921 is 129848081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 180848921 - 2¹⁴ = 180832537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180848951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8220395 + ... + 8220416.

It is an arithmetic number, because the mean of its divisors is an integer number (49322436).

Almost surely, 2^180848921 is an apocalyptic number.

180848921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

180848921 is a deficient number, since it is larger than the sum of its proper divisors (16440823).

180848921 is a wasteful number, since it uses less digits than its factorization.

180848921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16440822.

The product of its (nonzero) digits is 36864, while the sum is 41.

The square root of 180848921 is about 13448.0080681118. The cubic root of 180848921 is about 565.5078536065.

The spelling of 180848921 in words is "one hundred eighty million, eight hundred forty-eight thousand, nine hundred twenty-one".