380216511 has 44 divisors (see below), whose sum is σ = 586707552. Its totient is φ = 246273696.

The previous prime is 380216497. The next prime is 380216521. The reversal of 380216511 is 115612083.

380216511 is a `hidden beast` number, since 3 + 8 + 0 + 2 + 1 + 651 + 1 = 666.

It is not a de Polignac number, because 380216511 - 2⁵ = 380216479 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 3 and base 9.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380216521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 43 ways as a sum of consecutive naturals, for example, 2775235 + ... + 2775371.

Almost surely, 2^380216511 is an apocalyptic number.

380216511 is a deficient number, since it is larger than the sum of its proper divisors (206491041).

380216511 is an frugal number, since it uses more digits than its factorization.

380216511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 380216511 is about 19499.1412887850. The cubic root of 380216511 is about 724.4531816511.

Adding to 380216511 its reverse (115612083), we get a palindrome (495828594).

The spelling of 380216511 in words is "three hundred eighty million, two hundred sixteen thousand, five hundred eleven".