181864848 has 160 divisors (see below), whose sum is σ = 543965184. Its totient is φ = 51840000.

The previous prime is 181864831. The next prime is 181864849. The reversal of 181864848 is 848468181.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 181864797 and 181864806.

It is not an unprimeable number, because it can be changed into a prime (181864849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 670953 + ... + 671223.

Almost surely, 2^181864848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 181864848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271982592).

181864848 is an abundant number, since it is smaller than the sum of its proper divisors (362100336).

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

181864848 is a wasteful number, since it uses less digits than its factorization.

181864848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365 (or 359 counting only the distinct ones).

The product of its digits is 393216, while the sum is 48.

The square root of 181864848 is about 13485.7275665794. The cubic root of 181864848 is about 566.5647989128.

It can be divided in two parts, 1818 and 64848, that added together give a palindrome (66666).

The spelling of 181864848 in words is "one hundred eighty-one million, eight hundred sixty-four thousand, eight hundred forty-eight".