381073391 has 8 divisors (see below), whose sum is σ = 382843584. Its totient is φ = 379308160.

The previous prime is 381073387. The next prime is 381073417. The reversal of 381073391 is 193370183.

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 381073391 - 2² = 381073387 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 (381073351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265211 + ... + 266643.

It is an arithmetic number, because the mean of its divisors is an integer number (47855448).

Almost surely, 2^381073391 is an apocalyptic number.

381073391 is a deficient number, since it is larger than the sum of its proper divisors (1770193).

381073391 is a wasteful number, since it uses less digits than its factorization.

381073391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2481.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 381073391 is about 19521.1011728335. The cubic root of 381073391 is about 724.9969978473.

The spelling of 381073391 in words is "three hundred eighty-one million, seventy-three thousand, three hundred ninety-one".