378438077186 has 16 divisors (see below), whose sum is σ = 614700530808. Its totient is φ = 173698732800.

The previous prime is 378438077161. The next prime is 378438077209. The reversal of 378438077186 is 681770834873.

It can be written as a sum of positive squares in 4 ways, for example, as 223620223225 + 154817853961 = 472885^2 + 393469^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40203335 + ... + 40212746.

Almost surely, 2^378438077186 is an apocalyptic number.

378438077186 is a deficient number, since it is larger than the sum of its proper divisors (236262453622).

378438077186 is a wasteful number, since it uses less digits than its factorization.

378438077186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80416277.

The product of its (nonzero) digits is 37933056, while the sum is 62.

The spelling of 378438077186 in words is "three hundred seventy-eight billion, four hundred thirty-eight million, seventy-seven thousand, one hundred eighty-six".