381708545 has 8 divisors (see below), whose sum is σ = 459328320. Its totient is φ = 304514800.

The previous prime is 381708511. The next prime is 381708563. The reversal of 381708545 is 545807183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 381708545 - 2¹⁴ = 381692161 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104531 + ... + 108120.

It is an arithmetic number, because the mean of its divisors is an integer number (57416040).

Almost surely, 2^381708545 is an apocalyptic number.

It is an amenable number.

381708545 is a deficient number, since it is larger than the sum of its proper divisors (77619775).

381708545 is a wasteful number, since it uses less digits than its factorization.

381708545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213015.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 381708545 is about 19537.3627954235. The cubic root of 381708545 is about 725.3995704689.

The spelling of 381708545 in words is "three hundred eighty-one million, seven hundred eight thousand, five hundred forty-five".