380633805 has 24 divisors (see below), whose sum is σ = 661410360. Its totient is φ = 202498560.

The previous prime is 380633801. The next prime is 380633861. The reversal of 380633805 is 508336083.

It can be written as a sum of positive squares in 4 ways, for example, as 39012516 + 341621289 = 6246^2 + 18483^2 .

It is not a de Polignac number, because 380633805 - 2² = 380633801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 380633805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380633801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8065 + ... + 28745.

It is an arithmetic number, because the mean of its divisors is an integer number (27558765).

Almost surely, 2^380633805 is an apocalyptic number.

It is an amenable number.

380633805 is a deficient number, since it is larger than the sum of its proper divisors (280776555).

380633805 is a wasteful number, since it uses less digits than its factorization.

380633805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21101 (or 21098 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 380633805 is about 19509.8386718086. The cubic root of 380633805 is about 724.7181179246.

Adding to 380633805 its reverse (508336083), we get a palindrome (888969888).

The spelling of 380633805 in words is "three hundred eighty million, six hundred thirty-three thousand, eight hundred five".