381378073 has 8 divisors (see below), whose sum is σ = 384801120. Its totient is φ = 377963040.

The previous prime is 381378071. The next prime is 381378091. The reversal of 381378073 is 370873183.

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 381378073 - 2¹ = 381378071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381378071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132061 + ... + 134917.

It is an arithmetic number, because the mean of its divisors is an integer number (48100140).

Almost surely, 2^381378073 is an apocalyptic number.

It is an amenable number.

381378073 is a deficient number, since it is larger than the sum of its proper divisors (3423047).

381378073 is a wasteful number, since it uses less digits than its factorization.

381378073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4007.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 381378073 is about 19528.9035278482. The cubic root of 381378073 is about 725.1901668412.

The spelling of 381378073 in words is "three hundred eighty-one million, three hundred seventy-eight thousand, seventy-three".