381987203 has 8 divisors (see below), whose sum is σ = 413527296. Its totient is φ = 350755200.

The previous prime is 381987187. The next prime is 381987209. The reversal of 381987203 is 302789183.

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

It is a cyclic number.

It is not a de Polignac number, because 381987203 - 2⁴ = 381987187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (381987209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74438 + ... + 79403.

It is an arithmetic number, because the mean of its divisors is an integer number (51690912).

Almost surely, 2^381987203 is an apocalyptic number.

381987203 is a deficient number, since it is larger than the sum of its proper divisors (31540093).

381987203 is a wasteful number, since it uses less digits than its factorization.

381987203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154045.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 381987203 is about 19544.4929072105. The cubic root of 381987203 is about 725.5760482443.

The spelling of 381987203 in words is "three hundred eighty-one million, nine hundred eighty-seven thousand, two hundred three".