181452868 has 6 divisors (see below), whose sum is σ = 317542526. Its totient is φ = 90726432.

The previous prime is 181452833. The next prime is 181452871. The reversal of 181452868 is 868254181.

It can be written as a sum of positive squares in only one way, i.e., 112529664 + 68923204 = 10608^2 + 8302^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22681605 + ... + 22681612.

Almost surely, 2^181452868 is an apocalyptic number.

It is an amenable number.

181452868 is a deficient number, since it is larger than the sum of its proper divisors (136089658).

181452868 is a wasteful number, since it uses less digits than its factorization.

181452868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45363221 (or 45363219 counting only the distinct ones).

The product of its digits is 122880, while the sum is 43.

The square root of 181452868 is about 13470.4442391482. Note that the first 3 decimals coincide. The cubic root of 181452868 is about 566.1366607621.

The spelling of 181452868 in words is "one hundred eighty-one million, four hundred fifty-two thousand, eight hundred sixty-eight".