378355851 has 6 divisors (see below), whose sum is σ = 546514020. Its totient is φ = 252237228.

The previous prime is 378355811. The next prime is 378355853. The reversal of 378355851 is 158553873.

378355851 is a `hidden beast` number, since 37 + 8 + 35 + 585 + 1 = 666.

It is not a de Polignac number, because 378355851 - 2¹⁷ = 378224779 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 378355797 and 378355806.

It is not an unprimeable number, because it can be changed into a prime (378355853) 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, 21019761 + ... + 21019778.

It is an arithmetic number, because the mean of its divisors is an integer number (91085670).

Almost surely, 2^378355851 is an apocalyptic number.

378355851 is a deficient number, since it is larger than the sum of its proper divisors (168158169).

378355851 is a wasteful number, since it uses less digits than its factorization.

378355851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42039545 (or 42039542 counting only the distinct ones).

The product of its digits is 504000, while the sum is 45.

The square root of 378355851 is about 19451.3714426515. The cubic root of 378355851 is about 723.2695000312.

The spelling of 378355851 in words is "three hundred seventy-eight million, three hundred fifty-five thousand, eight hundred fifty-one".