381337487 has 4 divisors (see below), whose sum is σ = 382489896. Its totient is φ = 380185080.

The previous prime is 381337477. The next prime is 381337529. The reversal of 381337487 is 784733183.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 381337487 - 2⁶ = 381337423 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 (381337477) 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, 575708 + ... + 576369.

It is an arithmetic number, because the mean of its divisors is an integer number (95622474).

Almost surely, 2^381337487 is an apocalyptic number.

381337487 is a deficient number, since it is larger than the sum of its proper divisors (1152409).

381337487 is a wasteful number, since it uses less digits than its factorization.

381337487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152408.

The product of its digits is 338688, while the sum is 44.

The square root of 381337487 is about 19527.8643737609. The cubic root of 381337487 is about 725.1644411774.

The spelling of 381337487 in words is "three hundred eighty-one million, three hundred thirty-seven thousand, four hundred eighty-seven".