381705154 has 8 divisors (see below), whose sum is σ = 572916240. Its totient is φ = 190733076.

The previous prime is 381705143. The next prime is 381705157. The reversal of 381705154 is 451507183.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (381705157) 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 3 ways as a sum of consecutive naturals, for example, 55704 + ... + 62179.

It is an arithmetic number, because the mean of its divisors is an integer number (71614530).

Almost surely, 2^381705154 is an apocalyptic number.

381705154 is a deficient number, since it is larger than the sum of its proper divisors (191211086).

381705154 is a wasteful number, since it uses less digits than its factorization.

381705154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119504.

The product of its (nonzero) digits is 16800, while the sum is 34.

The square root of 381705154 is about 19537.2760127915. The cubic root of 381705154 is about 725.3974223752.

The spelling of 381705154 in words is "three hundred eighty-one million, seven hundred five thousand, one hundred fifty-four".