378637851 has 16 divisors (see below), whose sum is σ = 511726208. Its totient is φ = 249004800.

The previous prime is 378637849. The next prime is 378637867. The reversal of 378637851 is 158736873.

It is not a de Polignac number, because 378637851 - 2¹ = 378637849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 378637851.

It is not an unprimeable number, because it can be changed into a prime (378637841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94356 + ... + 98286.

It is an arithmetic number, because the mean of its divisors is an integer number (31982888).

Almost surely, 2^378637851 is an apocalyptic number.

378637851 is a deficient number, since it is larger than the sum of its proper divisors (133088357).

378637851 is a wasteful number, since it uses less digits than its factorization.

378637851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4362.

The product of its digits is 846720, while the sum is 48.

The square root of 378637851 is about 19458.6189386606. The cubic root of 378637851 is about 723.4491469134.

The spelling of 378637851 in words is "three hundred seventy-eight million, six hundred thirty-seven thousand, eight hundred fifty-one".