181348772 has 24 divisors (see below), whose sum is σ = 352084320. Its totient is φ = 81032960.

The previous prime is 181348763. The next prime is 181348789. The reversal of 181348772 is 277843181.

181348772 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32333 + ... + 37524.

It is an arithmetic number, because the mean of its divisors is an integer number (14670180).

Almost surely, 2^181348772 is an apocalyptic number.

It is an amenable number.

181348772 is a deficient number, since it is larger than the sum of its proper divisors (170735548).

181348772 is a wasteful number, since it uses less digits than its factorization.

181348772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69931 (or 69929 counting only the distinct ones).

The product of its digits is 75264, while the sum is 41.

The square root of 181348772 is about 13466.5798182018. The cubic root of 181348772 is about 566.0283795032.

The spelling of 181348772 in words is "one hundred eighty-one million, three hundred forty-eight thousand, seven hundred seventy-two".