378157671 has 6 divisors (see below), whose sum is σ = 546227760. Its totient is φ = 252105108.

The previous prime is 378157657. The next prime is 378157687. The reversal of 378157671 is 176751873.

378157671 is a `hidden beast` number, since 3 + 7 + 8 + 1 + 576 + 71 = 666.

It is not a de Polignac number, because 378157671 - 2⁶ = 378157607 is a prime.

It is a super-2 number, since 2×378157671² = 286006448272288482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378157601) 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, 21008751 + ... + 21008768.

It is an arithmetic number, because the mean of its divisors is an integer number (91037960).

Almost surely, 2^378157671 is an apocalyptic number.

378157671 is a deficient number, since it is larger than the sum of its proper divisors (168070089).

378157671 is a wasteful number, since it uses less digits than its factorization.

378157671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42017525 (or 42017522 counting only the distinct ones).

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

The square root of 378157671 is about 19446.2765330538. The cubic root of 378157671 is about 723.1431969025.

The spelling of 378157671 in words is "three hundred seventy-eight million, one hundred fifty-seven thousand, six hundred seventy-one".