381570473 has 4 divisors (see below), whose sum is σ = 381755220. Its totient is φ = 381385728.

The previous prime is 381570461. The next prime is 381570481. The reversal of 381570473 is 374075183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 374075183 = 1783 ⋅209801.

It can be written as a sum of positive squares in 2 ways, for example, as 303212569 + 78357904 = 17413^2 + 8852^2 .

It is a cyclic number.

It is not a de Polignac number, because 381570473 - 2²² = 377376169 is a prime.

It is a super-3 number, since 3×381570473³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381570073) 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 3 ways as a sum of consecutive naturals, for example, 89240 + ... + 93417.

It is an arithmetic number, because the mean of its divisors is an integer number (95438805).

Almost surely, 2^381570473 is an apocalyptic number.

It is an amenable number.

381570473 is a deficient number, since it is larger than the sum of its proper divisors (184747).

381570473 is a wasteful number, since it uses less digits than its factorization.

381570473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184746.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 381570473 is about 19533.8289385363. The cubic root of 381570473 is about 725.3120958328.

The spelling of 381570473 in words is "three hundred eighty-one million, five hundred seventy thousand, four hundred seventy-three".