381293445 has 32 divisors (see below), whose sum is σ = 663062400. Its totient is φ = 185981184.

The previous prime is 381293443. The next prime is 381293453. The reversal of 381293445 is 544392183.

It is not a de Polignac number, because 381293445 - 2¹ = 381293443 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381293443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12286 + ... + 30224.

It is an arithmetic number, because the mean of its divisors is an integer number (20720700).

Almost surely, 2^381293445 is an apocalyptic number.

It is an amenable number.

381293445 is a deficient number, since it is larger than the sum of its proper divisors (281768955).

381293445 is a wasteful number, since it uses less digits than its factorization.

381293445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18069.

The product of its digits is 103680, while the sum is 39.

The square root of 381293445 is about 19526.7366705243. The cubic root of 381293445 is about 725.1365228434.

The spelling of 381293445 in words is "three hundred eighty-one million, two hundred ninety-three thousand, four hundred forty-five".