378131873 has 12 divisors (see below), whose sum is σ = 449229312. Its totient is φ = 317215080.

The previous prime is 378131851. The next prime is 378131879.

378131873 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 378131873 - 2¹⁰ = 378130849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 378131873.

It is not an unprimeable number, because it can be changed into a prime (378131879) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79793 + ... + 84398.

It is an arithmetic number, because the mean of its divisors is an integer number (37435776).

Almost surely, 2^378131873 is an apocalyptic number.

It is an amenable number.

378131873 is a deficient number, since it is larger than the sum of its proper divisors (71097439).

378131873 is a wasteful number, since it uses less digits than its factorization.

378131873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164252 (or 164245 counting only the distinct ones).

The product of its digits is 84672, while the sum is 41.

The square root of 378131873 is about 19445.6132070964. The cubic root of 378131873 is about 723.1267521989.

The spelling of 378131873 in words is "three hundred seventy-eight million, one hundred thirty-one thousand, eight hundred seventy-three".