381707405 has 8 divisors (see below), whose sum is σ = 459523584. Its totient is φ = 304382800.

The previous prime is 381707401. The next prime is 381707411. The reversal of 381707405 is 504707183.

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

It is not a de Polignac number, because 381707405 - 2² = 381707401 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381707401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121181 + ... + 124290.

It is an arithmetic number, because the mean of its divisors is an integer number (57440448).

Almost surely, 2^381707405 is an apocalyptic number.

It is an amenable number.

381707405 is a deficient number, since it is larger than the sum of its proper divisors (77816179).

381707405 is a wasteful number, since it uses less digits than its factorization.

381707405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245787.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 381707405 is about 19537.3336205328. Note that the first 3 decimals coincide. The cubic root of 381707405 is about 725.3988483156.

The spelling of 381707405 in words is "three hundred eighty-one million, seven hundred seven thousand, four hundred five".