380388663 has 16 divisors (see below), whose sum is σ = 563846400. Its totient is φ = 253454040.

The previous prime is 380388661. The next prime is 380388689. The reversal of 380388663 is 366883083.

It is a happy number.

It is not a de Polignac number, because 380388663 - 2¹ = 380388661 is a prime.

It is a super-3 number, since 3×380388663³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380388661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78958 + ... + 83636.

It is an arithmetic number, because the mean of its divisors is an integer number (35240400).

Almost surely, 2^380388663 is an apocalyptic number.

380388663 is a deficient number, since it is larger than the sum of its proper divisors (183457737).

380388663 is a wasteful number, since it uses less digits than its factorization.

380388663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7699 (or 7693 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The square root of 380388663 is about 19503.5551374615. Note that the first 3 decimals coincide. The cubic root of 380388663 is about 724.5625029128.

The spelling of 380388663 in words is "three hundred eighty million, three hundred eighty-eight thousand, six hundred sixty-three".