380505895 has 32 divisors (see below), whose sum is σ = 571069440. Its totient is φ = 236451840.

The previous prime is 380505889. The next prime is 380505929. The reversal of 380505895 is 598505083.

It is a happy number.

It is not a de Polignac number, because 380505895 - 2⁵ = 380505863 is a prime.

It is a super-2 number, since 2×380505895² = 289569472259502050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136839 + ... + 139591.

It is an arithmetic number, because the mean of its divisors is an integer number (17845920).

Almost surely, 2^380505895 is an apocalyptic number.

380505895 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

380505895 is a deficient number, since it is larger than the sum of its proper divisors (190563545).

380505895 is a wasteful number, since it uses less digits than its factorization.

380505895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3135.

The product of its (nonzero) digits is 216000, while the sum is 43.

The square root of 380505895 is about 19506.5603067276. The cubic root of 380505895 is about 724.6369295848.

The spelling of 380505895 in words is "three hundred eighty million, five hundred five thousand, eight hundred ninety-five".