378872671 has 2 divisors, whose sum is σ = 378872672. Its totient is φ = 378872670.

The previous prime is 378872657. The next prime is 378872713. The reversal of 378872671 is 176278873.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 378872671 - 2²³ = 370484063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378872171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189436335 + 189436336.

It is an arithmetic number, because the mean of its divisors is an integer number (189436336).

Almost surely, 2^378872671 is an apocalyptic number.

378872671 is a deficient number, since it is larger than the sum of its proper divisors (1).

378872671 is an equidigital number, since it uses as much as digits as its factorization.

378872671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 790272, while the sum is 49.

The square root of 378872671 is about 19464.6518335161. The cubic root of 378872671 is about 723.5986699313.

The spelling of 378872671 in words is "three hundred seventy-eight million, eight hundred seventy-two thousand, six hundred seventy-one".