381563105 has 16 divisors (see below), whose sum is σ = 570858624. Its totient is φ = 237857280.

The previous prime is 381563099. The next prime is 381563131. The reversal of 381563105 is 501365183.

It is not a de Polignac number, because 381563105 - 2⁶ = 381563041 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 495152 + ... + 495921.

It is an arithmetic number, because the mean of its divisors is an integer number (35678664).

Almost surely, 2^381563105 is an apocalyptic number.

381563105 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

381563105 is a deficient number, since it is larger than the sum of its proper divisors (189295519).

381563105 is a wasteful number, since it uses less digits than its factorization.

381563105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991096.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 381563105 is about 19533.6403417284. The cubic root of 381563105 is about 725.3074272903.

The spelling of 381563105 in words is "three hundred eighty-one million, five hundred sixty-three thousand, one hundred five".