378871173 has 6 divisors (see below), whose sum is σ = 547258374. Its totient is φ = 252580776.

The previous prime is 378871147. The next prime is 378871177. The reversal of 378871173 is 371178873.

It can be written as a sum of positive squares in only one way, i.e., 242051364 + 136819809 = 15558^2 + 11697^2 .

It is not a de Polignac number, because 378871173 - 2⁸ = 378870917 is a prime.

It is a super-3 number, since 3×378871173³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378871177) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21048390 + ... + 21048407.

It is an arithmetic number, because the mean of its divisors is an integer number (91209729).

Almost surely, 2^378871173 is an apocalyptic number.

It is an amenable number.

378871173 is a deficient number, since it is larger than the sum of its proper divisors (168387201).

378871173 is a wasteful number, since it uses less digits than its factorization.

378871173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42096803 (or 42096800 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 378871173 is about 19464.6133534679. The cubic root of 378871173 is about 723.5977162668.

It can be divided in two parts, 37887 and 1173, that added together give a triangular number (39060 = T₂₇₉).

The spelling of 378871173 in words is "three hundred seventy-eight million, eight hundred seventy-one thousand, one hundred seventy-three".