378651771 has 12 divisors (see below), whose sum is σ = 550299048. Its totient is φ = 250884864.

The previous prime is 378651751. The next prime is 378651799. The reversal of 378651771 is 177156873.

It is not a de Polignac number, because 378651771 - 2⁵ = 378651739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (378651751) 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, 127590 + ... + 130523.

It is an arithmetic number, because the mean of its divisors is an integer number (45858254).

Almost surely, 2^378651771 is an apocalyptic number.

378651771 is a deficient number, since it is larger than the sum of its proper divisors (171647277).

378651771 is a wasteful number, since it uses less digits than its factorization.

378651771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258282 (or 258279 counting only the distinct ones).

The product of its digits is 246960, while the sum is 45.

The square root of 378651771 is about 19458.9766174894. The cubic root of 378651771 is about 723.4580122788.

The spelling of 378651771 in words is "three hundred seventy-eight million, six hundred fifty-one thousand, seven hundred seventy-one".