380505591 has 6 divisors (see below), whose sum is σ = 549619200. Its totient is φ = 253670388.

The previous prime is 380505557. The next prime is 380505599. The reversal of 380505591 is 195505083.

It is a happy number.

It is not a de Polignac number, because 380505591 - 2¹³ = 380497399 is a prime.

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 (380505599) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21139191 + ... + 21139208.

It is an arithmetic number, because the mean of its divisors is an integer number (91603200).

Almost surely, 2^380505591 is an apocalyptic number.

380505591 is a deficient number, since it is larger than the sum of its proper divisors (169113609).

380505591 is a wasteful number, since it uses less digits than its factorization.

380505591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42278405 (or 42278402 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 380505591 is about 19506.5525144757. The cubic root of 380505591 is about 724.6367366052.

The spelling of 380505591 in words is "three hundred eighty million, five hundred five thousand, five hundred ninety-one".