381746389178 has 32 divisors (see below), whose sum is σ = 719126425728. Its totient is φ = 147646713600.

The previous prime is 381746389177. The next prime is 381746389261. The reversal of 381746389178 is 871983647183.

It is not an unprimeable number, because it can be changed into a prime (381746389177) 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, 9025883 + ... + 9068078.

It is an arithmetic number, because the mean of its divisors is an integer number (22472700804).

Almost surely, 2^381746389178 is an apocalyptic number.

381746389178 is a deficient number, since it is larger than the sum of its proper divisors (337380036550).

381746389178 is a wasteful number, since it uses less digits than its factorization.

381746389178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18094118.

The product of its digits is 48771072, while the sum is 65.

The spelling of 381746389178 in words is "three hundred eighty-one billion, seven hundred forty-six million, three hundred eighty-nine thousand, one hundred seventy-eight".