381386746 has 8 divisors (see below), whose sum is σ = 616086324. Its totient is φ = 176024640.

The previous prime is 381386723. The next prime is 381386771. The reversal of 381386746 is 647683183.

It can be written as a sum of positive squares in 2 ways, for example, as 370986121 + 10400625 = 19261^2 + 3225^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 381386696 and 381386705.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7334335 + ... + 7334386.

Almost surely, 2^381386746 is an apocalyptic number.

381386746 is a deficient number, since it is larger than the sum of its proper divisors (234699578).

381386746 is a wasteful number, since it uses less digits than its factorization.

381386746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14668736.

The product of its digits is 580608, while the sum is 46.

The square root of 381386746 is about 19529.1255820633. The cubic root of 381386746 is about 725.1956640342.

The spelling of 381386746 in words is "three hundred eighty-one million, three hundred eighty-six thousand, seven hundred forty-six".