381449207 has 4 divisors (see below), whose sum is σ = 381593856. Its totient is φ = 381304560.

The previous prime is 381449161. The next prime is 381449231. The reversal of 381449207 is 702944183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 702944183 = 163 ⋅4312541.

It is a cyclic number.

It is not a de Polignac number, because 381449207 - 2¹⁴ = 381432823 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 (381449807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68294 + ... + 73667.

It is an arithmetic number, because the mean of its divisors is an integer number (95398464).

Almost surely, 2^381449207 is an apocalyptic number.

381449207 is a deficient number, since it is larger than the sum of its proper divisors (144649).

381449207 is a wasteful number, since it uses less digits than its factorization.

381449207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144648.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 381449207 is about 19530.7246921357. The cubic root of 381449207 is about 725.2352511237.

The spelling of 381449207 in words is "three hundred eighty-one million, four hundred forty-nine thousand, two hundred seven".